Utah Freeze Dates
The freezing temperature table which follows gives dates for the last spring and first fall freezes (0°C
or lower) at each station with sufficient minimum temperature data for calculations to be performed.
For more details click on station name. For help, select freeze dates on the help page.
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| A S R RSCH LAB | 12-Apr | 20-May | 16-May | 21-Jun | 09-Sep | 26-Sep | 28-Sep | 14-Oct | 94 | 133.8 | 132.0 | 185 | 1950-1966 | 8 |
| Agua Canyon | 27-Apr | 21-May | 22-May | 09-Jun | 08-Sep | 05-Oct | 06-Oct | 29-Oct | 91 | 138.5 | 139.5 | 163 | 1995-2024 | 18 |
| ALLENS RCH | 01-May | 26-May | 25-May | 29-Jun | 25-Aug | 17-Sep | 18-Sep | 10-Oct | 76 | 114.3 | 115.0 | 148 | 1963-2001 | 29 |
| ALPINE | 15-Apr | 12-May | 10-May | 17-Jun | 31-Aug | 04-Oct | 05-Oct | 05-Nov | 109 | 145.9 | 145.5 | 202 | 1900-2024 | 46 |
| ALTA | 11-May | 15-Jun | 15-Jun | 11-Jul | 20-Aug | 14-Sep | 16-Sep | 16-Oct | 61 | 92.2 | 93.5 | 135 | 1905-2024 | 48 |
| ALTAMONT | 04-May | 01-Jun | 30-May | 30-Jun | 17-Aug | 22-Sep | 21-Sep | 28-Oct | 57 | 113.2 | 116.0 | 164 | 1953-2024 | 67 |
| ALTON | 07-May | 05-Jun | 04-Jun | 03-Jul | 23-Aug | 25-Sep | 25-Sep | 28-Oct | 64 | 113.0 | 115.0 | 159 | 1915-2024 | 106 |
| ALUNITE | 02-May | 31-May | 31-May | 28-Jun | 09-Sep | 29-Sep | 27-Sep | 26-Oct | 78 | 121.6 | 123.0 | 160 | 1917-1953 | 33 |
| AMALGA | 08-Jun | 08-Jun | 08-Jun | 08-Jun | 12-Sep | 23-Sep | 24-Sep | 05-Oct | 96 | 96.0 | 96.0 | 96 | 1951-1953 | 1 |
| ANETH PLT | 22-Mar | 25-Apr | 23-Apr | 16-May | 16-Sep | 19-Oct | 18-Oct | 15-Nov | 139 | 178.5 | 178.0 | 221 | 1900-2008 | 25 |
| ANGLE | 21-May | 17-Jun | 15-Jun | 17-Jul | 14-Aug | 11-Sep | 13-Sep | 02-Oct | 29 | 86.7 | 86.5 | 117 | 1981-2024 | 36 |
| ANNABELLA NEAR | 31-Aug | 31-Aug | 31-Aug | 31-Aug | 1906-1910 | 0* | ||||||||
| ANTELOPE ISLAND | 04-Apr | 05-May | 04-May | 21-May | 03-Sep | 04-Oct | 08-Oct | 24-Oct | 130 | 153.8 | 153.5 | 191 | 1953-1972 | 16 |
| ANTELOPE ISLAND NORTH | 10-Oct | 10-Oct | 10-Oct | 10-Oct | 1982-1983 | 0* | ||||||||
| ANTIMONY | 02-Jun | 28-Jun | 26-Jun | 24-Jul | 25-Jul | 25-Aug | 29-Aug | 22-Sep | 1† | 62.1 | 73.0 | 103 | 1901-1975 | 11 |
| AQUA CANYON - BRYCE CANYON NP. | 28-Apr | 30-May | 01-Jun | 18-Jun | 08-Sep | 01-Oct | 01-Oct | 29-Oct | 91 | 124.6 | 123.0 | 159 | 1990-2024 | 29 |
| ARAGONITE UTAH | 14-Apr | 01-May | 01-May | 29-May | 24-Sep | 21-Oct | 16-Oct | 08-Feb | 129 | 169.0 | 174.0 | 203 | 1997-2024 | 25 |
| ARCHES NP HQS | 12-Mar | 13-Apr | 14-Apr | 09-May | 17-Sep | 25-Oct | 27-Oct | 18-Nov | 141 | 196.2 | 203.0 | 237 | 1980-2024 | 36 |
| ASSAY - HATCH 10SW | 08-May | 04-Jun | 03-Jun | 26-Jun | 02-Sep | 28-Sep | 29-Sep | 24-Oct | 78 | 117.0 | 118.0 | 154 | 1983-2024 | 37 |
| BADGER SPRING - IVINS 14W UTAH | 12-Jan | 11-Mar | 12-Mar | 22-Apr | 26-Oct | 23-Nov | 25-Nov | 04-Jan | 207 | 257.9 | 256.0 | 319 | 1991-2024 | 30 |
| BALKNAP RANGER STATION | 16-Jul | 16-Jul | 16-Jul | 16-Jul | 18-Aug | 18-Aug | 18-Aug | 18-Aug | 33 | 33.0 | 33.0 | 33 | 1914-1916 | 1 |
| BAUER | 16-Apr | 12-May | 12-May | 09-Jun | 09-Sep | 22-Sep | 23-Sep | 07-Oct | 111 | 135.6 | 140.0 | 155 | 1941-1959 | 11 |
| BEAR LAKE SP | 09-May | 30-May | 28-May | 30-Jun | 24-Aug | 25-Sep | 29-Sep | 28-Oct | 82 | 124.8 | 117.5 | 170 | 1989-2021 | 8 |
| BEAR RIVER BAY | 12-Feb | 18-Apr | 21-Apr | 19-Jun | 01-Oct | 30-Oct | 29-Oct | 19-Nov | 125 | 192.1 | 198.5 | 240 | 1969-1996 | 20 |
| BEAR RIVER REFUGE | 22-Mar | 24-Apr | 25-Apr | 25-May | 18-Sep | 13-Oct | 15-Oct | 14-Nov | 132 | 172.7 | 171.0 | 228 | 1938-1984 | 41 |
| Bear River RS | 29-May | 26-Jun | 27-Jun | 12-Jul | 28-Jul | 29-Aug | 30-Aug | 18-Sep | 31 | 65.0 | 63.5 | 87 | 2011-2024 | 12 |
| BEAR RIVER UTAH | 08-Jun | 03-Jul | 05-Jul | 18-Jul | 25-Jul | 21-Aug | 26-Aug | 18-Sep | 8 | 48.9 | 52.0 | 80 | 1999-2024 | 25 |
| BEAVER | 28-Apr | 06-Jun | 06-Jun | 03-Jul | 29-Jul | 15-Sep | 17-Sep | 14-Oct | 48 | 102.2 | 103.0 | 154 | 1904-1990 | 74 |
| BEAVER 15 E | 29-May | 04-Jun | 04-Jun | 10-Jun | 23-Sep | 23-Sep | 24-Sep | 24-Sep | 106 | 111.5 | 111.5 | 117 | 2012-2014 | 2 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: A - BE
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| BEAVER CANYON PWR HOUSE | 04-May | 02-Jun | 04-Jun | 28-Jun | 04-Sep | 23-Sep | 24-Sep | 08-Oct | 79 | 111.6 | 116.0 | 155 | 1940-2021 | 19 |
| BEAVER CREEK NURSERY | 01-Jul | 02-Jul | 02-Jul | 03-Jul | 19-Aug | 01-Sep | 01-Sep | 14-Sep | 47 | 61.0 | 61.0 | 75 | 1914-1917 | 2 |
| Beaver Dams | 11-May | 09-Jun | 11-Jun | 07-Jul | 26-Aug | 23-Sep | 23-Sep | 23-Oct | 55 | 106.6 | 109.0 | 157 | 1980-2024 | 31 |
| Beaver Divide | 12-May | 14-Jun | 16-Jun | 13-Jul | 27-Jul | 11-Sep | 15-Sep | 16-Oct | 22 | 89.3 | 91.0 | 133 | 1979-2024 | 35 |
| Ben Lomond Peak | 01-May | 03-Jun | 07-Jun | 29-Jun | 04-Aug | 28-Sep | 30-Sep | 29-Oct | 36 | 118.1 | 116.0 | 172 | 1979-2024 | 33 |
| Ben Lomond Trail | 26-Apr | 01-Jun | 01-Jun | 02-Jul | 07-Aug | 21-Sep | 20-Sep | 27-Oct | 64 | 112.9 | 113.5 | 183 | 1980-2024 | 30 |
| Bevans Cabin | 17-Apr | 04-May | 05-May | 21-May | 23-Sep | 15-Oct | 18-Oct | 03-Nov | 128 | 165.2 | 161.5 | 200 | 2012-2024 | 12 |
| Big Flat | 25-May | 17-Jun | 16-Jun | 24-Jul | 20-Aug | 15-Sep | 15-Sep | 18-Oct | 65 | 93.7 | 91.0 | 129 | 1979-2024 | 33 |
| BIG INDIAN VALLEY - LASAL 6S U | 16-Apr | 05-May | 04-May | 05-Jun | 09-Sep | 15-Oct | 12-Oct | 17-Nov | 134 | 164.8 | 166.0 | 204 | 1988-2024 | 35 |
| BIG WATER | 16-Mar | 10-Apr | 12-Apr | 02-May | 12-Oct | 01-Nov | 02-Nov | 20-Nov | 183 | 207.3 | 204.0 | 233 | 1986-2024 | 27 |
| BINGHAM CANYON | 15-Apr | 14-May | 14-May | 04-Jun | 18-Sep | 12-Oct | 14-Oct | 08-Nov | 124 | 152.0 | 149.0 | 202 | 1941-1974 | 28 |
| BINGHAM CANYON 2 NE | 17-Apr | 13-May | 11-May | 14-Jun | 18-Sep | 12-Oct | 15-Oct | 08-Nov | 122 | 152.0 | 147.5 | 181 | 1975-1985 | 10 |
| BIRDSEYE | 26-May | 27-Jun | 29-Jun | 22-Jul | 25-Jul | 21-Aug | 18-Aug | 24-Sep | 4 | 55.8 | 60.0 | 108 | 1934-1992 | 21 |
| BIRDSEYE NEBO CREEK | 10-Jun | 22-Jun | 17-Jun | 11-Jul | 20-Aug | 04-Sep | 05-Sep | 20-Sep | 65 | 68.0 | 68.0 | 71 | 1980-1983 | 2 |
| BLACK CEDAR - FILMORE 5E UTAH | 23-Apr | 22-May | 22-May | 16-Jun | 04-Sep | 05-Oct | 05-Oct | 08-Nov | 91 | 135.6 | 130.0 | 190 | 1987-2024 | 37 |
| Black Flat-U.M. Ck | 28-May | 21-Jun | 19-Jun | 20-Jul | 09-Aug | 09-Sep | 12-Sep | 06-Oct | 25 | 80.6 | 82.0 | 121 | 1980-2024 | 34 |
| BLACK ROCK | 27-Apr | 30-May | 30-May | 09-Jul | 20-Aug | 19-Sep | 19-Sep | 24-Oct | 59 | 113.3 | 111.5 | 179 | 1901-2024 | 88 |
| BLACKS FK RS | 08-Jul | 16-Jul | 17-Jul | 21-Jul | 25-Jul | 01-Aug | 31-Jul | 13-Aug | 4 | 16.8 | 16.5 | 30 | 1918-1921 | 4 |
| Blacks Fork Jct | 04-Jun | 28-Jun | 01-Jul | 16-Jul | 28-Jul | 27-Aug | 29-Aug | 15-Sep | 31 | 60.8 | 56.0 | 81 | 2011-2024 | 14 |
| BLACKTAIL UTAH | 27-Apr | 18-May | 19-May | 08-Jun | 08-Sep | 05-Oct | 05-Oct | 04-Nov | 92 | 141.0 | 142.0 | 172 | 2002-2024 | 21 |
| BLANDING | 25-Mar | 12-May | 10-May | 17-Jul | 06-Sep | 12-Oct | 12-Oct | 15-Nov | 84 | 153.6 | 155.0 | 221 | 1905-2024 | 111 |
| BLANDING 26 SSW | 17-Apr | 28-Apr | 03-May | 04-May | 05-Oct | 19-Oct | 25-Oct | 27-Oct | 154 | 174.0 | 177.0 | 191 | 2011-2014 | 3 |
| BLOWHARD MTN RADAR | 21-May | 18-Jun | 17-Jun | 20-Jul | 18-Aug | 12-Sep | 12-Sep | 07-Oct | 53 | 86.8 | 87.0 | 116 | 1965-2006 | 34 |
| BLUE CREEK | 09-Nov | 09-Nov | 09-Nov | 09-Nov | 1899-1952 | 0* | ||||||||
| BLUFF | 16-Mar | 25-Apr | 24-Apr | 26-May | 18-Sep | 11-Oct | 11-Oct | 11-Nov | 120 | 169.1 | 168.5 | 230 | 1911-2024 | 90 |
| BLUFF 32 NW | 16-Apr | 30-Apr | 02-May | 11-May | 04-Oct | 12-Oct | 07-Oct | 25-Oct | 149 | 165.3 | 155.0 | 192 | 2011-2014 | 3 |
| BONANZA | 08-Apr | 10-May | 09-May | 15-Jun | 22-Aug | 02-Oct | 06-Oct | 01-Nov | 94 | 146.8 | 148.0 | 186 | 1938-1993 | 33 |
| BONANZA PUMPING STN | 26-Apr | 08-May | 09-May | 19-May | 16-Sep | 13-Oct | 17-Oct | 07-Nov | 130 | 158.8 | 156.0 | 188 | 1960-1966 | 6 |
| BOULDER | 17-Apr | 18-May | 15-May | 04-Jul | 09-Sep | 05-Oct | 04-Oct | 06-Nov | 79 | 141.0 | 142.0 | 192 | 1954-2024 | 67 |
| BOUNTIFUL BENCH | 28-Mar | 27-Apr | 27-Apr | 30-May | 18-Sep | 21-Oct | 21-Oct | 14-Nov | 136 | 177.2 | 180.0 | 212 | 1975-2024 | 49 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: BE - BO
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| BOUNTIFUL-VAL VERDA | 11-Mar | 19-Apr | 20-Apr | 09-May | 23-Sep | 22-Oct | 22-Oct | 15-Nov | 156 | 186.4 | 180.0 | 234 | 1913-2014 | 33 |
| Box Creek | 11-May | 04-Jun | 06-Jun | 22-Jun | 02-Sep | 27-Sep | 26-Sep | 23-Oct | 83 | 116.3 | 120.0 | 152 | 1980-2024 | 17 |
| Brian Head | 12-May | 04-Jun | 09-Jun | 22-Jun | 08-Sep | 30-Sep | 28-Sep | 22-Oct | 90 | 118.9 | 119.0 | 151 | 2012-2024 | 13 |
| BRIAN HEAD | 04-Jun | 23-Jun | 23-Jun | 06-Jul | 05-Aug | 05-Sep | 08-Sep | 21-Sep | 50 | 74.8 | 77.0 | 98 | 1992-2009 | 15 |
| BRIGHAM CITY | 09-Apr | 04-May | 02-May | 02-Jun | 09-Sep | 11-Oct | 12-Oct | 13-Nov | 111 | 160.0 | 161.0 | 206 | 1899-1974 | 54 |
| BRIGHAM CITY 28 WNW | 17-Apr | 24-May | 18-May | 18-Jun | 06-Sep | 06-Oct | 06-Oct | 27-Oct | 81 | 136.0 | 130.0 | 193 | 2008-2024 | 17 |
| BRIGHAM CITY WASTE PLT | 12-Apr | 10-May | 08-May | 10-Jun | 01-Sep | 03-Oct | 05-Oct | 28-Oct | 108 | 147.0 | 146.5 | 194 | 1974-2024 | 42 |
| Brighton | 11-May | 12-Jun | 12-Jun | 05-Jul | 24-Aug | 16-Sep | 18-Sep | 22-Oct | 56 | 98.1 | 98.0 | 134 | 1987-2024 | 31 |
| BRIMSTONE RES. - MILFORD 20WSW | 19-Apr | 14-May | 13-May | 13-Jun | 17-Sep | 13-Oct | 11-Oct | 11-Nov | 119 | 152.7 | 150.0 | 195 | 1988-2024 | 37 |
| Brown Duck | 30-May | 22-Jun | 20-Jun | 24-Jul | 26-Jul | 02-Sep | 06-Sep | 01-Oct | 2 | 73.2 | 78.0 | 111 | 1979-2024 | 37 |
| BRUIN POINT - SUNNYSIDE 6NNE U | 13-May | 14-Jun | 15-Jun | 07-Jul | 19-Aug | 15-Sep | 15-Sep | 16-Oct | 55 | 93.4 | 93.0 | 141 | 1991-2024 | 30 |
| BRYCE CANYON AP | 26-May | 25-Jun | 25-Jun | 17-Jul | 05-Aug | 01-Sep | 04-Sep | 03-Oct | 30 | 69.0 | 68.0 | 120 | 1949-2024 | 55 |
| BRYCE CANYON NATL PRK | 20-Jun | 06-Jul | 03-Jul | 22-Jul | 01-Aug | 19-Aug | 15-Aug | 17-Sep | 31 | 44.4 | 34.0 | 89 | 1972-1978 | 7 |
| BRYCE CANYON NP HQRS | 05-May | 15-Jun | 16-Jun | 06-Jul | 02-Aug | 11-Sep | 13-Sep | 16-Oct | 33 | 88.8 | 87.5 | 157 | 1959-2024 | 62 |
| BRYCE CANYON UTAH | 28-May | 19-Jun | 20-Jun | 10-Jul | 16-Aug | 11-Sep | 13-Sep | 30-Sep | 52 | 85.1 | 89.5 | 115 | 2003-2024 | 22 |
| BRYCE CNYN NATL PRK | 05-Jun | 23-Jun | 23-Jun | 08-Jul | 03-Aug | 02-Sep | 11-Sep | 23-Sep | 36 | 72.5 | 77.0 | 105 | 1933-1959 | 16 |
| BRYSON CANYON UTAH | 25-Mar | 23-Apr | 22-Apr | 12-May | 27-Sep | 20-Oct | 23-Oct | 17-Nov | 151 | 181.0 | 180.0 | 229 | 1988-2024 | 34 |
| Buck Flat | 12-May | 14-Jun | 13-Jun | 19-Jul | 25-Aug | 16-Sep | 16-Sep | 18-Oct | 38 | 95.1 | 96.0 | 135 | 1979-2024 | 37 |
| BUCK FLAT - ESCALANTE 10NW UTA | 03-May | 29-May | 29-May | 18-Jun | 08-Sep | 01-Oct | 01-Oct | 28-Oct | 92 | 125.2 | 126.0 | 158 | 1990-2024 | 35 |
| Buck Pasture | 08-Jun | 29-Jun | 01-Jul | 15-Jul | 27-Jul | 19-Aug | 12-Aug | 18-Sep | 30 | 51.9 | 51.0 | 87 | 2012-2024 | 13 |
| Buckboard Flat | 28-Apr | 18-May | 18-May | 09-Jun | 08-Sep | 07-Oct | 09-Oct | 29-Oct | 91 | 143.0 | 143.5 | 167 | 2012-2024 | 12 |
| BUES CANYON UTAH | 16-Apr | 06-May | 02-May | 13-Jun | 16-Sep | 13-Oct | 11-Oct | 16-Nov | 119 | 159.7 | 156.0 | 214 | 1986-2024 | 31 |
| Bug Lake | 11-May | 12-Jun | 15-Jun | 03-Jul | 24-Aug | 16-Sep | 19-Sep | 22-Oct | 69 | 97.8 | 94.5 | 135 | 1979-2024 | 34 |
| BULLFROG 8 N | 11-Apr | 11-Apr | 11-Apr | 11-Apr | 2001-2001 | 0* | ||||||||
| BULLFROG BASIN | 23-Feb | 02-Apr | 02-Apr | 29-Apr | 11-Oct | 08-Nov | 10-Nov | 24-Nov | 184 | 221.5 | 222.0 | 268 | 1967-2024 | 39 |
| BURRVILLE | 31-May | 17-Jun | 13-Jun | 05-Jul | 05-Sep | 14-Sep | 16-Sep | 24-Sep | 62 | 92.8 | 94.0 | 116 | 1911-1919 | 5 |
| Burts Miller Ranch | 12-May | 11-Jun | 18-Jun | 11-Jul | 01-Sep | 14-Sep | 15-Sep | 22-Sep | 64 | 95.2 | 90.5 | 133 | 2009-2024 | 12 |
| CALLAO | 22-Apr | 16-May | 14-May | 30-Jun | 22-Aug | 27-Sep | 26-Sep | 23-Oct | 57 | 134.3 | 133.5 | 177 | 1903-2024 | 64 |
| CALLISTER RCH | 01-May | 23-May | 20-May | 30-Jun | 15-Sep | 29-Sep | 01-Oct | 21-Oct | 83 | 127.2 | 127.0 | 162 | 1967-1984 | 15 |
| Camp Jackson | 25-Apr | 15-May | 14-May | 30-May | 18-Sep | 08-Oct | 06-Oct | 03-Nov | 128 | 146.9 | 146.0 | 168 | 1986-2024 | 19 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: BO - CA
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| CANYON BREEZE RANCH | 16-Apr | 07-May | 07-May | 25-May | 25-Sep | 09-Oct | 09-Oct | 26-Oct | 141 | 155.8 | 154.0 | 185 | 2007-2013 | 5 |
| CANYONLANDS-THE NECK | 10-Apr | 30-Apr | 30-Apr | 14-Jun | 18-Sep | 17-Oct | 18-Oct | 15-Nov | 133 | 172.2 | 172.0 | 219 | 1965-2024 | 55 |
| CANYONLANDS-THE NEEDLES | 30-Mar | 03-May | 03-May | 02-Jun | 12-Sep | 10-Oct | 11-Oct | 01-Nov | 111 | 160.3 | 162.0 | 194 | 1965-2024 | 53 |
| CAPITOL REEF NP | 16-Mar | 22-Apr | 20-Apr | 26-May | 21-Sep | 25-Oct | 26-Oct | 20-Nov | 137 | 186.3 | 187.0 | 228 | 1967-2024 | 58 |
| CART CREEK UTAH | 01-May | 31-May | 31-May | 24-Jun | 24-Aug | 24-Sep | 24-Sep | 24-Oct | 61 | 117.5 | 118.5 | 166 | 1985-2024 | 36 |
| Cascade Mountain | 30-Apr | 26-May | 23-May | 18-Jun | 08-Sep | 04-Oct | 06-Oct | 27-Oct | 92 | 131.3 | 130.0 | 163 | 2003-2024 | 21 |
| CASTLE DALE | 27-Apr | 25-May | 23-May | 06-Jul | 21-Aug | 23-Sep | 23-Sep | 27-Oct | 54 | 122.2 | 125.0 | 164 | 1899-2024 | 100 |
| CASTLE GATE | 06-May | 05-Jun | 20-May | 20-Jul | 25-Jul | 28-Aug | 29-Aug | 02-Oct | 5 | 70.0 | 70.0 | 135 | 1893-1897 | 2 |
| CASTLE ROCK | 16-Jun | 21-Jun | 21-Jun | 26-Jun | 15-Aug | 16-Aug | 17-Aug | 18-Aug | 50 | 56.5 | 56.5 | 63 | 1904-1961 | 2 |
| Castle Valley | 27-May | 15-Jun | 13-Jun | 30-Jun | 31-Aug | 16-Sep | 16-Sep | 05-Oct | 70 | 93.6 | 94.0 | 117 | 1980-2024 | 21 |
| CASTLE VALLEY | 20-Mar | 13-Apr | 13-Apr | 06-May | 21-Sep | 18-Oct | 18-Oct | 12-Nov | 157 | 190.0 | 191.0 | 215 | 1979-2009 | 17 |
| CASTLE VALLEY 1NE | 07-Apr | 25-Apr | 30-Apr | 07-May | 05-Oct | 06-Oct | 06-Oct | 07-Oct | 160 | 160.0 | 160.0 | 160 | 2010-2014 | 1 |
| CASTLE VALLEY 1SE | 13-Apr | 22-Apr | 19-Apr | 04-May | 10-Oct | 24-Oct | 24-Oct | 18-Nov | 168 | 183.3 | 180.0 | 203 | 2015-2024 | 8 |
| CASTLETON | 20-Apr | 05-May | 02-May | 17-May | 13-Sep | 04-Oct | 05-Oct | 30-Oct | 121 | 154.2 | 155.0 | 186 | 1964-1978 | 9 |
| CEDAR BREAKS NM | 06-May | 30-May | 24-May | 21-Jun | 08-Sep | 26-Sep | 25-Sep | 23-Oct | 89 | 116.7 | 118.5 | 148 | 2016-2024 | 6 |
| CEDAR BREAKS STORAGE | 01-Jun | 21-Jun | 23-Jun | 01-Jul | 14-Aug | 11-Sep | 12-Sep | 30-Sep | 45 | 81.5 | 83.0 | 107 | 1948-1970 | 15 |
| CEDAR CITY | 18-Apr | 09-May | 08-May | 05-Jun | 22-Sep | 08-Oct | 06-Oct | 26-Oct | 124 | 153.4 | 155.5 | 188 | 2000-2024 | 20 |
| CEDAR CITY 18 SSE | 16-Apr | 27-Apr | 02-May | 02-May | 28-Sep | 10-Oct | 07-Oct | 25-Oct | 149 | 166.3 | 158.0 | 192 | 2011-2014 | 3 |
| CEDAR CITY 5E | 03-May | 25-May | 25-May | 11-Jun | 09-Sep | 02-Oct | 30-Sep | 08-Nov | 92 | 131.3 | 129.0 | 168 | 1983-2024 | 26 |
| CEDAR CITY MUNI AP | 28-Apr | 22-May | 19-May | 30-Jun | 02-Sep | 01-Oct | 01-Oct | 31-Oct | 75 | 133.1 | 132.5 | 173 | 1948-2024 | 76 |
| CEDAR CITY POWERHOUSE | 05-Apr | 17-May | 19-May | 13-Jun | 02-Sep | 30-Sep | 03-Oct | 31-Oct | 109 | 137.7 | 139.5 | 178 | 1906-1961 | 42 |
| CEDAR CITY STEAM PLT | 24-Apr | 12-May | 12-May | 14-Jun | 17-Sep | 07-Oct | 08-Oct | 31-Oct | 123 | 149.4 | 148.0 | 187 | 1962-1983 | 21 |
| CEDAR MOUNTAINS - STOCKTON 24W | 16-Apr | 17-May | 14-May | 17-Jun | 09-Sep | 01-Oct | 04-Oct | 27-Oct | 88 | 139.3 | 143.0 | 194 | 1984-2024 | 33 |
| CEDAR PT | 28-Apr | 21-May | 21-May | 12-Jun | 03-Sep | 05-Oct | 07-Oct | 29-Oct | 99 | 138.6 | 141.0 | 167 | 1957-2018 | 56 |
| Chalk Creek #1 | 12-May | 16-Jun | 17-Jun | 13-Jul | 26-Jul | 11-Sep | 14-Sep | 16-Oct | 21 | 87.4 | 88.0 | 133 | 1979-2024 | 31 |
| Chalk Creek #2 | 13-May | 07-Jun | 11-Jun | 18-Jun | 02-Sep | 27-Sep | 25-Sep | 21-Oct | 81 | 113.6 | 116.5 | 158 | 1979-2024 | 12 |
| Chepeta | 08-Jun | 25-Jun | 20-Jun | 24-Jul | 25-Jul | 27-Aug | 01-Sep | 19-Sep | 1† | 63.9 | 67.5 | 100 | 1980-2024 | 32 |
| CHEPETA UTAH | 11-Jun | 23-Jun | 21-Jun | 11-Jul | 01-Aug | 29-Aug | 30-Aug | 20-Sep | 39 | 68.7 | 71.0 | 90 | 1999-2023 | 20 |
| CHURCH WELLS | 02-Mar | 21-Apr | 27-Apr | 18-May | 20-Sep | 20-Oct | 22-Oct | 09-Nov | 135 | 177.4 | 166.0 | 252 | 1976-1986 | 7 |
| CIRCLEVILLE | 30-Apr | 08-Jun | 09-Jun | 06-Jul | 17-Aug | 14-Sep | 15-Sep | 13-Oct | 52 | 99.2 | 103.0 | 145 | 1942-2010 | 49 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: CA - CI
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| CISCO | 10-Apr | 06-May | 08-May | 08-Jun | 21-Sep | 09-Oct | 10-Oct | 02-Nov | 116 | 156.9 | 153.0 | 199 | 1893-1967 | 22 |
| CITY CREEK WTP | 17-Apr | 18-May | 22-May | 14-Jun | 18-Sep | 07-Oct | 08-Oct | 27-Oct | 105 | 143.2 | 144.0 | 193 | 1956-2024 | 23 |
| Clayton Springs | 02-Jun | 17-Jun | 18-Jun | 01-Jul | 28-Jul | 02-Sep | 05-Sep | 23-Sep | 48 | 77.3 | 73.5 | 100 | 2000-2024 | 16 |
| CLEAR CREEK | 03-Jun | 01-Jul | 01-Jul | 24-Jul | 27-Jul | 24-Aug | 26-Aug | 19-Sep | 8 | 54.4 | 59.0 | 90 | 1936-1967 | 32 |
| Clear Creek #1 | 07-May | 03-Jun | 08-Jun | 20-Jun | 20-Aug | 22-Sep | 22-Sep | 24-Oct | 71 | 112.2 | 113.0 | 154 | 1979-2024 | 19 |
| Clear Creek #2 | 08-May | 09-Jun | 11-Jun | 13-Jul | 31-Jul | 17-Sep | 18-Sep | 23-Oct | 39 | 102.2 | 104.5 | 160 | 1979-2024 | 30 |
| CLEAR LAKE REFUGE | 11-May | 30-May | 25-May | 30-Jun | 02-Sep | 21-Sep | 19-Sep | 21-Oct | 75 | 116.1 | 119.5 | 142 | 1964-1984 | 16 |
| CLG WARD UTAH ST UNIV | 08-May | 08-May | 08-May | 08-May | 22-Sep | 22-Sep | 22-Sep | 22-Sep | 137 | 137.0 | 137.0 | 137 | 1968-1969 | 1 |
| COALVILLE | 17-May | 18-Jun | 17-Jun | 22-Jul | 31-Jul | 31-Aug | 02-Sep | 28-Sep | 17 | 75.4 | 77.0 | 117 | 1894-2012 | 71 |
| COALVILLE 13 E | 31-May | 22-Jun | 20-Jun | 19-Jul | 28-Jul | 29-Aug | 31-Aug | 26-Sep | 26 | 71.4 | 78.0 | 102 | 1975-2017 | 25 |
| COON PEAK KSL TV | 08-Jun | 08-Jun | 08-Jun | 08-Jun | 1953-1953 | 0* | ||||||||
| CORINNE | 08-Apr | 14-May | 12-May | 24-Jun | 22-Aug | 29-Sep | 29-Sep | 01-Nov | 76 | 139.4 | 138.0 | 182 | 1896-2006 | 83 |
| CORNISH SUGAR FACTORY | 09-May | 16-May | 09-May | 30-May | 21-Sep | 25-Sep | 26-Sep | 30-Sep | 135 | 139.5 | 139.5 | 144 | 1925-1927 | 2 |
| Corral | 24-May | 02-Jun | 25-May | 19-Jun | 15-Sep | 01-Oct | 29-Sep | 23-Oct | 104 | 123.0 | 113.0 | 152 | 2013-2017 | 3 |
| COTTONWOOD NURSERY | 12-Jun | 29-Jun | 30-Jun | 16-Jul | 11-Aug | 03-Sep | 12-Sep | 21-Sep | 26 | 60.8 | 47.0 | 92 | 1894-1920 | 5 |
| COTTONWOOD WEIR | 09-Mar | 30-Apr | 30-Apr | 30-May | 17-Sep | 19-Oct | 21-Oct | 17-Nov | 123 | 173.6 | 169.0 | 239 | 1917-2024 | 75 |
| COVE FT | 30-Apr | 06-Jun | 04-Jun | 30-Jun | 21-Aug | 15-Sep | 14-Sep | 13-Oct | 71 | 102.2 | 104.0 | 145 | 1942-1980 | 25 |
| CROYDEN | 23-Jun | 09-Jul | 08-Jul | 24-Jul | 16-Aug | 16-Aug | 16-Aug | 16-Aug | 54 | 54.0 | 54.0 | 54 | 1897-1900 | 1 |
| Currant Creek | 29-May | 20-Jun | 20-Jun | 12-Jul | 29-Jul | 31-Aug | 30-Aug | 22-Sep | 45 | 72.2 | 77.0 | 93 | 1979-2024 | 19 |
| CURRANT CREEK JUNCTION | 24-Apr | 29-May | 01-Jun | 24-Jun | 13-Sep | 18-Sep | 19-Sep | 26-Sep | 82 | 118.5 | 118.5 | 155 | 1985-1996 | 2 |
| CUTLER DAM | 06-Apr | 02-May | 02-May | 27-May | 24-Sep | 17-Oct | 16-Oct | 22-Nov | 128 | 168.7 | 168.0 | 230 | 1980-2024 | 40 |
| Daniels-Strawberry | 09-May | 14-Jun | 14-Jun | 13-Jul | 27-Jul | 11-Sep | 13-Sep | 22-Oct | 20 | 91.8 | 95.0 | 137 | 1979-2024 | 32 |
| DEER CREEK DAM | 08-May | 07-Jun | 07-Jun | 19-Jul | 25-Jul | 13-Sep | 14-Sep | 24-Oct | 6 | 98.5 | 98.5 | 165 | 1939-2024 | 82 |
| DELLE | 01-May | 19-May | 15-May | 15-Jun | 22-Aug | 16-Sep | 20-Sep | 07-Oct | 79 | 117.7 | 133.0 | 141 | 1919-1952 | 3 |
| DELTA | 15-Apr | 19-May | 19-May | 19-Jun | 02-Sep | 27-Sep | 26-Sep | 28-Oct | 75 | 132.8 | 133.0 | 183 | 1938-2024 | 73 |
| DELTA 32 SSW | 22-May | 22-May | 22-May | 22-May | 1985-1987 | 0* | ||||||||
| DELTA 4 NE | 03-May | 26-May | 03-Jun | 10-Jun | 04-Oct | 06-Oct | 07-Oct | 07-Oct | 119 | 133.0 | 126.0 | 154 | 2011-2014 | 3 |
| DESERET | 21-Apr | 24-May | 22-May | 06-Jul | 27-Aug | 21-Sep | 21-Sep | 28-Oct | 56 | 120.6 | 122.0 | 167 | 1893-2024 | 121 |
| DESERT EXP RANGE | 30-Apr | 25-May | 24-May | 19-Jun | 02-Sep | 23-Sep | 22-Sep | 21-Oct | 93 | 121.2 | 119.0 | 153 | 1950-1984 | 35 |
| DEWEY | 12-Apr | 04-May | 04-May | 25-May | 24-Aug | 03-Oct | 05-Oct | 29-Oct | 114 | 152.6 | 153.0 | 184 | 1968-2004 | 29 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: CI - DI
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| DIAMOND RIM | 30-Apr | 29-May | 31-May | 22-Jun | 07-Sep | 27-Sep | 25-Sep | 27-Oct | 85 | 121.8 | 118.0 | 170 | 1984-2024 | 40 |
| Dills Camp | 09-May | 31-May | 29-May | 18-Jun | 01-Sep | 30-Sep | 30-Sep | 25-Oct | 81 | 123.6 | 124.0 | 152 | 1979-2024 | 18 |
| DINOSAUR NM | 06-Oct | 06-Oct | 06-Oct | 06-Oct | 1941-1958 | 0* | ||||||||
| DINOSAUR NM-QUARRY AREA | 06-Apr | 12-May | 09-May | 15-Jul | 18-Aug | 29-Sep | 30-Sep | 25-Oct | 34 | 140.3 | 144.5 | 184 | 1916-2024 | 58 |
| Donkey Reservoir | 01-Jun | 23-Jun | 19-Jun | 21-Jul | 05-Aug | 03-Sep | 09-Sep | 21-Sep | 44 | 73.4 | 71.0 | 110 | 1986-2024 | 33 |
| DRAPER | 14-May | 06-Jun | 05-Jun | 30-Jun | 13-Sep | 22-Sep | 21-Sep | 04-Oct | 83 | 108.7 | 121.0 | 122 | 1966-1968 | 3 |
| DRAPER-POINT OF MTN | 08-Apr | 28-Apr | 22-Apr | 10-Jun | 29-Sep | 17-Oct | 16-Oct | 07-Nov | 156 | 178.5 | 178.0 | 208 | 1986-2008 | 10 |
| Dry Bread Pond | 02-May | 13-Jun | 15-Jun | 07-Jul | 23-Aug | 16-Sep | 18-Sep | 22-Oct | 53 | 96.4 | 94.0 | 156 | 1979-2024 | 36 |
| Dry Fork | 02-May | 31-May | 03-Jun | 18-Jun | 06-Sep | 01-Oct | 01-Oct | 27-Oct | 81 | 123.2 | 121.0 | 164 | 1995-2024 | 17 |
| DUCHESNE | 21-Apr | 21-May | 19-May | 25-Jun | 09-Aug | 23-Sep | 24-Sep | 27-Oct | 67 | 126.2 | 126.0 | 189 | 1906-2024 | 109 |
| DUCHESNE AP | 01-May | 20-May | 20-May | 09-Jun | 13-Sep | 24-Sep | 22-Sep | 07-Oct | 115 | 132.2 | 133.0 | 159 | 1974-1980 | 5 |
| DUGWAY | 08-Apr | 13-May | 13-May | 15-Jun | 11-Sep | 29-Sep | 28-Sep | 29-Oct | 112 | 140.3 | 134.5 | 187 | 1951-2013 | 56 |
| DUGWAY 7 N ORR RCH | 05-Jun | 18-Jun | 17-Jun | 30-Jun | 10-Sep | 10-Sep | 10-Sep | 10-Sep | 72 | 72.0 | 72.0 | 72 | 1969-1970 | 1 |
| DUGWAY PROVING GROUNDS | 08-Apr | 06-May | 06-May | 02-Jun | 18-Sep | 04-Oct | 04-Oct | 29-Oct | 120 | 153.0 | 146.0 | 187 | 1950-1970 | 16 |
| EAST PORTAL | 16-Jun | 07-Jul | 04-Jul | 24-Jul | 29-Jul | 20-Aug | 22-Aug | 09-Sep | 9 | 43.3 | 46.5 | 77 | 1905-1955 | 22 |
| East Willow Creek | 08-May | 05-Jun | 08-Jun | 21-Jun | 01-Sep | 21-Sep | 21-Sep | 12-Oct | 80 | 109.6 | 110.0 | 138 | 1987-2024 | 17 |
| ECHO DAM | 05-May | 05-Jun | 03-Jun | 01-Jul | 29-Jul | 12-Sep | 13-Sep | 10-Oct | 49 | 100.3 | 102.0 | 139 | 1940-2024 | 80 |
| EDEN-LIBERTY | 27-Apr | 01-Jun | 09-Jun | 18-Jun | 20-Sep | 06-Oct | 07-Oct | 27-Oct | 101 | 128.8 | 124.0 | 183 | 2011-2024 | 10 |
| EF Blacks Fork GS | 29-May | 25-Jun | 25-Jun | 12-Jul | 27-Jul | 30-Aug | 30-Aug | 18-Sep | 44 | 66.7 | 68.0 | 87 | 2011-2024 | 14 |
| ELBERTA | 16-Apr | 18-May | 17-May | 04-Jul | 24-Aug | 29-Sep | 28-Sep | 29-Oct | 75 | 135.5 | 132.0 | 190 | 1902-1992 | 82 |
| ELECTRIC LAKE | 30-May | 25-Jun | 26-Jun | 13-Jul | 25-Jul | 26-Aug | 25-Aug | 25-Sep | 21 | 63.4 | 62.0 | 101 | 1980-2009 | 26 |
| EMERY | 17-Apr | 27-May | 28-May | 06-Jul | 23-Aug | 25-Sep | 25-Sep | 22-Oct | 49 | 121.2 | 121.0 | 164 | 1901-1978 | 69 |
| EMERY 15 SW | 08-Jun | 20-Jun | 15-Jun | 07-Jul | 20-Aug | 14-Sep | 14-Sep | 26-Sep | 67 | 86.7 | 86.5 | 105 | 1979-1986 | 6 |
| ENSIGN - BOUNTIFUL 5NE | 17-Mar | 28-Apr | 29-Apr | 29-May | 14-Oct | 25-Oct | 22-Oct | 14-Nov | 146 | 182.6 | 179.0 | 230 | 1983-1997 | 10 |
| ENTERPRISE | 11-May | 28-May | 27-May | 11-Jun | 09-Sep | 30-Sep | 30-Sep | 23-Oct | 92 | 126.8 | 127.0 | 157 | 1905-2024 | 18 |
| ENTERPRISE BERYL JCT | 03-May | 11-Jun | 11-Jun | 19-Jul | 13-Aug | 13-Sep | 15-Sep | 12-Oct | 50 | 94.5 | 95.0 | 150 | 1941-2008 | 52 |
| ENTERPRISE UTAH | 27-Apr | 23-May | 23-May | 10-Jun | 09-Sep | 01-Oct | 02-Oct | 30-Oct | 92 | 132.3 | 133.0 | 186 | 2001-2024 | 23 |
| EPHRAIM | 17-Apr | 27-May | 26-May | 30-Jun | 27-Aug | 23-Sep | 22-Sep | 20-Oct | 79 | 120.6 | 123.0 | 173 | 1950-2024 | 71 |
| EPHRAIM ALPINE MEADOW | 01-Jun | 21-Jun | 20-Jun | 08-Jul | 20-Aug | 06-Sep | 07-Sep | 21-Sep | 54 | 77.2 | 77.0 | 107 | 1912-1934 | 18 |
| EPHRAIM HQ GBRC | 11-Jun | 11-Jun | 11-Jun | 11-Jun | 01-Sep | 13-Sep | 12-Sep | 24-Sep | 92 | 92.0 | 92.0 | 92 | 1951-1955 | 1 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: DI - EP
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| EPHRAIM HQ GBRC | 30-May | 18-Jun | 18-Jun | 07-Jul | 29-Jul | 08-Sep | 09-Sep | 05-Oct | 36 | 83.3 | 81.0 | 114 | 1918-1950 | 29 |
| EPHRAIM OAKS | 30-May | 17-Jun | 14-Jun | 09-Jul | 27-Aug | 13-Sep | 13-Sep | 06-Oct | 53 | 88.1 | 87.5 | 121 | 1918-1934 | 16 |
| ESCALANTE | 02-Apr | 16-May | 16-May | 30-Jun | 10-Aug | 03-Oct | 04-Oct | 01-Nov | 80 | 142.9 | 144.5 | 192 | 1902-2024 | 100 |
| ESCALANTE RIVER MOUTH | 02-Nov | 02-Nov | 02-Nov | 02-Nov | 1951-1953 | 0* | ||||||||
| ESKDALE | 24-Apr | 22-May | 20-May | 01-Jul | 02-Sep | 27-Sep | 25-Sep | 27-Oct | 74 | 128.5 | 129.0 | 182 | 1966-2024 | 55 |
| EUREKA | 30-Apr | 01-Jun | 25-May | 30-Jun | 23-Aug | 22-Sep | 21-Sep | 20-Oct | 54 | 114.6 | 118.5 | 156 | 1930-1984 | 16 |
| FAIRFIELD | 11-May | 08-Jun | 09-Jun | 20-Jul | 07-Aug | 11-Sep | 12-Sep | 03-Oct | 27 | 94.5 | 97.0 | 134 | 1911-2024 | 56 |
| FAIRFIELD CAA AP | 20-May | 07-Jun | 07-Jun | 25-Jun | 18-Sep | 22-Sep | 23-Sep | 27-Sep | 121 | 121.0 | 121.0 | 121 | 1948-1950 | 1 |
| FAIRVIEW 8N | 31-May | 08-Jun | 08-Jun | 17-Jun | 02-Sep | 16-Sep | 16-Sep | 06-Oct | 79 | 100.3 | 106.0 | 126 | 1975-2012 | 7 |
| Farmington | 28-Apr | 07-Jun | 10-Jun | 24-Jun | 24-Aug | 26-Sep | 26-Sep | 27-Oct | 63 | 111.9 | 111.0 | 169 | 1979-2024 | 32 |
| FARMINGTON | 22-Mar | 05-May | 05-May | 16-Jun | 08-Sep | 09-Oct | 12-Oct | 08-Nov | 96 | 157.9 | 161.0 | 201 | 1893-1965 | 57 |
| FARMINGTON 3 NW | 22-Mar | 29-Apr | 30-Apr | 13-Jun | 18-Sep | 13-Oct | 12-Oct | 15-Nov | 127 | 165.6 | 163.0 | 220 | 1948-2016 | 40 |
| Farmington Lower | 01-May | 01-Jun | 03-Jun | 21-Jun | 05-Sep | 28-Sep | 27-Sep | 27-Oct | 80 | 119.1 | 118.5 | 169 | 2004-2024 | 20 |
| Farnsworth Lake | 11-May | 08-Jun | 10-Jun | 02-Jul | 04-Sep | 24-Sep | 23-Sep | 22-Oct | 77 | 110.1 | 111.0 | 151 | 1980-2024 | 29 |
| FERRON | 11-Apr | 17-May | 14-May | 30-Jun | 02-Sep | 04-Oct | 05-Oct | 28-Oct | 75 | 140.4 | 142.5 | 185 | 1897-2024 | 70 |
| FILLMORE | 06-Apr | 15-May | 16-May | 02-Jul | 23-Aug | 03-Oct | 04-Oct | 04-Nov | 63 | 142.2 | 141.0 | 201 | 1893-2024 | 118 |
| FISH LAKE RS | 12-Jun | 12-Jun | 12-Jun | 12-Jun | 12-Sep | 12-Sep | 12-Sep | 12-Sep | 92 | 92.0 | 92.0 | 92 | 1916-1951 | 1 |
| Fish Lake Utah | 24-May | 17-Jun | 18-Jun | 08-Jul | 28-Jul | 08-Sep | 15-Sep | 28-Sep | 30 | 83.8 | 93.5 | 119 | 2011-2024 | 12 |
| FISH SPRINGS NWR | 08-Apr | 03-May | 02-May | 14-Jun | 13-Sep | 10-Oct | 11-Oct | 05-Nov | 92 | 160.0 | 155.0 | 205 | 1960-2016 | 39 |
| FIVE MILE - DUCHESNE 18SSE UTA | 23-Apr | 20-May | 23-May | 18-Jun | 08-Sep | 05-Oct | 05-Oct | 03-Nov | 92 | 137.9 | 138.0 | 171 | 1991-2024 | 32 |
| Five Points Lake | 01-Jun | 19-Jun | 18-Jun | 04-Jul | 09-Aug | 01-Sep | 02-Sep | 18-Sep | 47 | 75.6 | 77.5 | 103 | 1981-2024 | 20 |
| FLAMING GORGE | 04-May | 05-Jun | 06-Jun | 13-Jul | 16-Aug | 15-Sep | 15-Sep | 16-Oct | 60 | 102.7 | 105.0 | 162 | 1958-2024 | 64 |
| FLATTOP MOUNTAIN - CLEVELAND 1 | 24-Mar | 29-Apr | 29-Apr | 24-May | 01-Oct | 19-Oct | 20-Oct | 17-Nov | 138 | 174.1 | 173.5 | 223 | 1988-2024 | 36 |
| FREMONT INDIAN SP | 10-May | 06-Jun | 06-Jun | 30-Jun | 27-Aug | 18-Sep | 18-Sep | 07-Oct | 71 | 103.8 | 108.0 | 138 | 1988-2024 | 33 |
| FRISCO | 02-May | 25-May | 24-May | 13-Jun | 06-Sep | 03-Oct | 02-Oct | 30-Oct | 96 | 131.9 | 134.0 | 167 | 1897-1912 | 13 |
| FRUITA | 10-Apr | 28-Apr | 26-Apr | 16-May | 18-Sep | 25-Oct | 26-Oct | 18-Nov | 132 | 178.6 | 180.0 | 208 | 1939-2016 | 19 |
| FRUITLAND | 14-May | 13-Jun | 18-Jun | 05-Jul | 29-Jul | 10-Sep | 10-Sep | 14-Oct | 37 | 88.7 | 87.0 | 126 | 1910-1966 | 13 |
| FRUITLAND 1 ENE | 01-Jun | 12-Jun | 11-Jun | 22-Jun | 11-Sep | 11-Sep | 12-Sep | 12-Sep | 81 | 92.0 | 92.0 | 103 | 1988-1990 | 2 |
| FT DUCHESNE | 17-Apr | 25-May | 21-May | 11-Jul | 07-Aug | 22-Sep | 22-Sep | 28-Oct | 39 | 122.7 | 124.0 | 194 | 1888-2024 | 101 |
| Garden City Summit | 16-May | 14-Jun | 18-Jun | 23-Jun | 28-Jul | 06-Sep | 11-Sep | 06-Oct | 71 | 87.3 | 84.0 | 111 | 2009-2024 | 15 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: EP - GA
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| Gardner Peak | 25-Apr | 20-May | 21-May | 08-Jun | 16-Sep | 09-Oct | 08-Oct | 29-Oct | 109 | 142.3 | 141.0 | 171 | 2005-2024 | 20 |
| GARFIELD | 07-Mar | 16-Apr | 19-Apr | 29-May | 18-Sep | 29-Oct | 31-Oct | 24-Nov | 134 | 198.0 | 197.0 | 235 | 1925-2014 | 47 |
| GARLAND 1 NE | 16-Apr | 17-May | 13-May | 03-Jul | 09-Sep | 29-Sep | 25-Sep | 26-Oct | 74 | 136.2 | 135.0 | 175 | 1909-1979 | 37 |
| GARRISON | 30-Apr | 30-May | 30-May | 30-Jun | 03-Sep | 24-Sep | 23-Sep | 14-Oct | 78 | 118.1 | 118.0 | 156 | 1903-1990 | 32 |
| GBRC HQ | 08-May | 30-May | 24-May | 22-Jun | 08-Sep | 30-Sep | 01-Oct | 23-Oct | 90 | 123.3 | 123.0 | 152 | 2012-2024 | 12 |
| GBRC Meadows | 12-May | 11-Jun | 15-Jun | 29-Jun | 26-Aug | 17-Sep | 19-Sep | 01-Oct | 69 | 99.1 | 101.5 | 134 | 2012-2024 | 12 |
| GENEVA STEEL | 31-Mar | 26-Apr | 25-Apr | 16-May | 05-Oct | 27-Oct | 27-Oct | 16-Nov | 142 | 184.2 | 181.5 | 230 | 1953-1960 | 6 |
| GENEVA STEEL 2 | 04-Apr | 03-May | 02-May | 07-Jun | 09-Sep | 13-Oct | 17-Oct | 01-Nov | 94 | 163.5 | 169.0 | 211 | 1960-1982 | 22 |
| George Creek | 25-May | 19-Jun | 19-Jun | 11-Jul | 28-Jul | 11-Sep | 14-Sep | 05-Oct | 55 | 85.1 | 87.5 | 110 | 2011-2024 | 14 |
| GILES | 24-Apr | 12-May | 12-May | 08-Jun | 11-Sep | 27-Sep | 25-Sep | 18-Oct | 117 | 142.6 | 141.0 | 176 | 1895-1906 | 10 |
| GLEN CANYON CITY | 14-Apr | 28-Apr | 27-Apr | 09-May | 13-Oct | 28-Oct | 30-Oct | 26-Nov | 171 | 185.3 | 183.0 | 201 | 1963-2016 | 7 |
| GOBLIN VALLEY SP | 15-Apr | 28-Apr | 29-Apr | 11-May | 25-Sep | 15-Oct | 18-Oct | 31-Oct | 146 | 171.9 | 175.0 | 191 | 2006-2024 | 11 |
| GOLD HILL | 22-Apr | 13-May | 10-May | 14-Jun | 18-Sep | 09-Oct | 11-Oct | 07-Nov | 123 | 149.6 | 146.0 | 185 | 1966-1990 | 21 |
| Gooseberry RS | 12-May | 08-Jun | 10-Jun | 25-Jun | 01-Sep | 25-Sep | 23-Sep | 22-Oct | 78 | 110.4 | 107.5 | 156 | 1979-2024 | 18 |
| Gooseberry RS Up | 08-May | 29-May | 23-May | 22-Jun | 08-Sep | 02-Oct | 02-Oct | 24-Oct | 82 | 126.0 | 125.0 | 154 | 2011-2024 | 13 |
| GOVERNMENT CREEK | 04-May | 31-May | 01-Jun | 03-Jul | 08-Sep | 25-Sep | 23-Sep | 24-Oct | 75 | 118.3 | 117.5 | 155 | 1901-1950 | 48 |
| GRANITE PEAK DUGWAY PG | 07-Apr | 26-Apr | 20-Apr | 21-May | 25-Sep | 12-Oct | 13-Oct | 27-Oct | 156 | 174.7 | 179.0 | 190 | 2007-2024 | 7 |
| GRANTSVILLE 12 WNW | 13-Apr | 23-Apr | 22-Apr | 02-May | 24-Oct | 27-Oct | 27-Oct | 30-Oct | 181 | 187.5 | 187.5 | 194 | 2012-2014 | 2 |
| GRANTSVILLE 2W | 17-Apr | 03-May | 04-May | 18-May | 10-Sep | 14-Oct | 14-Oct | 05-Nov | 134 | 165.7 | 165.0 | 202 | 1906-2024 | 23 |
| GREEN RIVER AVIATION | 25-Mar | 04-May | 03-May | 28-May | 10-Sep | 05-Oct | 05-Oct | 30-Oct | 115 | 156.2 | 158.0 | 197 | 1948-2008 | 36 |
| GREEN RIVER RNG GWC | 16-Apr | 25-Apr | 24-Apr | 03-May | 02-Oct | 05-Oct | 06-Oct | 07-Oct | 156 | 156.0 | 156.0 | 156 | 1948-2009 | 1 |
| GROUSE CREEK | 15-May | 12-Jun | 15-Jun | 05-Jul | 31-Jul | 07-Sep | 06-Sep | 14-Oct | 45 | 89.3 | 81.0 | 152 | 1959-2011 | 37 |
| GROUSE CREEK | 20-May | 13-Jun | 19-Jun | 30-Jun | 03-Aug | 31-Aug | 05-Sep | 25-Sep | 87 | 97.5 | 97.5 | 108 | 1893-1939 | 2 |
| GROUSE CREEK 4 NE | 10-Jun | 10-Jun | 10-Jun | 10-Jun | 1982-1982 | 0* | ||||||||
| GUNNISON | 29-Apr | 03-Jun | 01-Jun | 30-Jun | 17-Aug | 15-Sep | 17-Sep | 14-Oct | 49 | 105.4 | 109.5 | 154 | 1956-1990 | 32 |
| Gutz Peak | 20-Apr | 12-May | 11-May | 02-Jun | 21-Sep | 14-Oct | 13-Oct | 14-Nov | 115 | 155.9 | 154.5 | 207 | 2005-2024 | 20 |
| HANKSVILLE | 31-Mar | 05-May | 03-May | 14-Jun | 08-Sep | 05-Oct | 05-Oct | 05-Nov | 112 | 154.8 | 157.0 | 197 | 1910-2024 | 99 |
| HANNA | 14-May | 10-Jun | 11-Jun | 30-Jun | 15-Aug | 10-Sep | 12-Sep | 24-Oct | 48 | 91.7 | 93.0 | 160 | 1952-2024 | 35 |
| HANS FLAT RS | 16-Apr | 07-May | 03-May | 09-Jun | 09-Sep | 16-Oct | 16-Oct | 17-Nov | 92 | 163.6 | 164.0 | 201 | 1981-2024 | 43 |
| Hardscrabble | 28-Apr | 03-Jun | 05-Jun | 23-Jun | 08-Sep | 29-Sep | 29-Sep | 27-Oct | 82 | 119.6 | 118.0 | 170 | 1994-2024 | 27 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: GA - HA
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| HARDWARE RCH | 11-Jun | 09-Jul | 09-Jul | 24-Jul | 25-Jul | 10-Aug | 08-Aug | 05-Sep | 1† | 32.1 | 31.5 | 61 | 1956-1991 | 28 |
| HARLEY DOME | 10-May | 15-May | 16-May | 19-May | 30-Sep | 18-Oct | 26-Oct | 29-Oct | 143 | 156.3 | 163.0 | 163 | 1960-1963 | 3 |
| Harris Flat | 29-May | 16-Jun | 16-Jun | 30-Jun | 05-Sep | 17-Sep | 18-Sep | 28-Sep | 71 | 94.0 | 95.0 | 112 | 1980-2024 | 12 |
| HATCH | 12-Jun | 22-Jun | 21-Jun | 01-Jul | 22-Aug | 11-Sep | 16-Sep | 23-Sep | 52 | 83.8 | 90.0 | 102 | 1915-2024 | 5 |
| Hayden Fork | 16-May | 21-Jun | 19-Jun | 16-Jul | 26-Jul | 03-Sep | 09-Sep | 06-Oct | 10 | 74.6 | 81.0 | 107 | 1979-2024 | 33 |
| HEBER | 17-Apr | 11-Jun | 12-Jun | 20-Jul | 29-Jul | 08-Sep | 10-Sep | 13-Oct | 27 | 89.4 | 89.5 | 174 | 1893-2013 | 116 |
| HENEFER | 07-Jun | 28-Jun | 27-Jun | 20-Jul | 30-Jul | 25-Aug | 25-Aug | 16-Sep | 10 | 58.4 | 55.0 | 97 | 1900-1920 | 19 |
| HENRIEVILLE | 11-May | 30-May | 25-May | 30-Jun | 12-Sep | 24-Sep | 18-Sep | 19-Oct | 79 | 121.6 | 123.0 | 160 | 1963-1979 | 10 |
| HERRIMAN | 11-May | 11-May | 11-May | 11-May | 17-Sep | 17-Sep | 17-Sep | 17-Sep | 129 | 129.0 | 129.0 | 129 | 1965-1965 | 1 |
| Hewinta | 07-Jun | 05-Jul | 04-Jul | 24-Jul | 25-Jul | 16-Aug | 17-Aug | 18-Sep | 1† | 43.0 | 46.5 | 87 | 1986-2024 | 36 |
| HEWINTA UTAH | 13-Jun | 08-Jul | 09-Jul | 24-Jul | 25-Jul | 12-Aug | 10-Aug | 09-Sep | 1† | 36.3 | 35.0 | 80 | 1984-2024 | 35 |
| HIAWATHA | 26-Apr | 27-May | 27-May | 29-Jun | 08-Sep | 01-Oct | 03-Oct | 01-Nov | 78 | 129.2 | 130.0 | 176 | 1917-1992 | 52 |
| Hickerson Park | 08-Jun | 28-Jun | 27-Jun | 12-Jul | 28-Jul | 24-Aug | 25-Aug | 18-Sep | 31 | 58.1 | 50.0 | 87 | 1986-2024 | 15 |
| HITE | 28-Feb | 24-Mar | 24-Mar | 24-Apr | 19-Oct | 05-Nov | 03-Nov | 23-Nov | 204 | 229.7 | 228.5 | 259 | 1900-1962 | 20 |
| HITE MARINA | 26-Feb | 30-Mar | 03-Apr | 30-Apr | 31-Oct | 16-Nov | 17-Nov | 01-Dec | 219 | 239.8 | 231.0 | 278 | 1969-1978 | 4 |
| HITE RS | 07-Feb | 26-Mar | 28-Mar | 25-May | 22-Oct | 16-Nov | 15-Nov | 04-Dec | 171 | 238.4 | 229.5 | 290 | 1978-2024 | 14 |
| Hobble Creek | 01-May | 24-May | 20-May | 18-Jun | 08-Sep | 08-Oct | 09-Oct | 27-Oct | 91 | 135.2 | 143.0 | 173 | 2013-2024 | 11 |
| Hole-in-Rock | 29-May | 04-Jul | 03-Jul | 24-Jul | 25-Jul | 17-Aug | 15-Aug | 18-Sep | 1† | 44.2 | 47.0 | 90 | 1986-2024 | 33 |
| HOLSTEIN RS | 15-Jun | 15-Jun | 15-Jun | 15-Jun | 19-Aug | 01-Sep | 01-Sep | 14-Sep | 91 | 91.0 | 91.0 | 91 | 1916-1917 | 1 |
| HORSE HOLLOW - COVE FORT 5W UT | 24-Apr | 19-May | 19-May | 16-Jun | 08-Sep | 05-Oct | 04-Oct | 04-Nov | 108 | 140.3 | 139.0 | 179 | 1991-2024 | 34 |
| Horse Ridge | 08-May | 08-Jun | 12-Jun | 01-Jul | 24-Aug | 19-Sep | 19-Sep | 22-Oct | 71 | 104.5 | 107.0 | 137 | 1979-2024 | 31 |
| HORSE RIDGE UTAH | 03-May | 04-Jun | 08-Jun | 22-Jun | 01-Sep | 24-Sep | 22-Sep | 27-Oct | 85 | 114.2 | 115.0 | 156 | 1992-2024 | 26 |
| HOVENWEEP NM | 14-Apr | 13-May | 12-May | 13-Jun | 16-Sep | 08-Oct | 08-Oct | 01-Nov | 105 | 149.9 | 152.5 | 194 | 1957-2024 | 58 |
| Huntington Horse | 11-May | 05-Jun | 05-Jun | 29-Jun | 08-Sep | 30-Sep | 28-Sep | 23-Oct | 71 | 117.8 | 120.0 | 152 | 2012-2024 | 12 |
| HUNTSVILLE | 13-Jun | 13-Jun | 13-Jun | 13-Jun | 1899-1932 | 0* | ||||||||
| HUNTSVILLE MONASTERY | 13-May | 12-Jun | 14-Jun | 09-Jul | 04-Aug | 08-Sep | 10-Sep | 09-Oct | 37 | 89.8 | 89.0 | 125 | 1977-2013 | 35 |
| HURRICANE | 29-Oct | 29-Oct | 29-Oct | 29-Oct | 1912-1941 | 0* | ||||||||
| HYRUM | 11-May | 11-May | 11-May | 11-May | 04-Oct | 04-Oct | 04-Oct | 04-Oct | 146 | 146.0 | 146.0 | 146 | 2012-2012 | 1 |
| IBAPAH | 12-May | 20-Jun | 19-Jun | 23-Jul | 27-Jul | 30-Aug | 02-Sep | 26-Sep | 28 | 72.3 | 75.0 | 133 | 1903-2024 | 95 |
| IBAPAH NEAR | 23-Jun | 26-Jun | 25-Jun | 30-Jun | 25-Aug | 03-Sep | 30-Aug | 17-Sep | 68 | 76.0 | 76.0 | 84 | 1907-1911 | 2 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: HA - IN
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| Indian Canyon | 07-May | 09-Jun | 11-Jun | 13-Jul | 25-Aug | 21-Sep | 20-Sep | 27-Oct | 55 | 103.7 | 106.0 | 156 | 1979-2024 | 33 |
| INTERNATIONAL | 21-Apr | 04-May | 26-Apr | 29-May | 01-Oct | 12-Oct | 11-Oct | 29-Oct | 125 | 162.0 | 173.0 | 177 | 1910-1929 | 5 |
| IOSEPA SOUTH RCH | 04-May | 23-May | 15-May | 25-Jun | 07-Sep | 20-Sep | 21-Sep | 03-Oct | 87 | 120.7 | 123.0 | 142 | 1911-1958 | 11 |
| JARVIE RCH | 29-Apr | 20-May | 21-May | 10-Jun | 07-Sep | 25-Sep | 27-Sep | 10-Oct | 105 | 130.0 | 129.0 | 160 | 2002-2020 | 8 |
| JARVIE RCH 1S | 29-Apr | 10-May | 09-May | 20-May | 03-Oct | 04-Oct | 04-Oct | 05-Oct | 136 | 147.5 | 147.5 | 159 | 2015-2018 | 2 |
| JENSEN | 22-Apr | 19-May | 16-May | 26-Jun | 25-Aug | 21-Sep | 21-Sep | 20-Oct | 60 | 126.2 | 126.0 | 167 | 1925-2024 | 83 |
| JENSEN SPRING - BERYL 12NNE | 15-Apr | 09-May | 08-May | 17-Jun | 19-Sep | 12-Oct | 12-Oct | 09-Nov | 109 | 157.4 | 159.0 | 203 | 1983-2024 | 37 |
| JOES VALLEY UTAH | 03-May | 02-Jun | 08-Jun | 22-Jun | 08-Sep | 29-Sep | 30-Sep | 29-Oct | 85 | 120.3 | 121.5 | 158 | 1999-2024 | 22 |
| JOHNSON PASS | 23-Apr | 25-May | 24-May | 23-Jun | 08-Sep | 01-Oct | 30-Sep | 08-Nov | 87 | 130.9 | 126.0 | 189 | 1973-2013 | 35 |
| Jones Corral | 23-May | 11-Jun | 13-Jun | 24-Jun | 20-Aug | 16-Sep | 16-Sep | 14-Oct | 70 | 97.9 | 101.0 | 121 | 2008-2024 | 17 |
| JOY | 05-May | 05-May | 05-May | 05-May | 18-Sep | 18-Sep | 18-Sep | 18-Sep | 1911-1913 | 0* | ||||
| KAMAS | 09-May | 14-Jun | 15-Jun | 21-Jul | 30-Jul | 09-Sep | 12-Sep | 12-Oct | 35 | 87.5 | 87.5 | 137 | 1949-2024 | 60 |
| KANAB | 19-Mar | 08-May | 07-May | 26-Jun | 30-Jul | 18-Oct | 21-Oct | 18-Nov | 95 | 167.8 | 168.0 | 227 | 1903-2024 | 91 |
| KANE GULCH - BLANDING 23WSW | 21-Apr | 20-May | 21-May | 18-Jun | 14-Sep | 02-Oct | 05-Oct | 24-Oct | 96 | 136.1 | 134.0 | 169 | 1991-2024 | 33 |
| KANOSH | 19-Apr | 14-May | 12-May | 15-Jun | 16-Sep | 10-Oct | 10-Oct | 09-Nov | 114 | 149.5 | 149.0 | 198 | 1907-2013 | 44 |
| KEARNS | 17-Apr | 02-May | 02-May | 17-May | 29-Sep | 18-Oct | 16-Oct | 13-Nov | 156 | 169.5 | 164.0 | 194 | 1943-1946 | 4 |
| KELTON | 30-Apr | 30-May | 01-Jun | 22-Jun | 25-Aug | 16-Sep | 16-Sep | 07-Oct | 81 | 111.1 | 113.0 | 140 | 1899-1929 | 19 |
| Kilfoil Creek | 09-May | 09-Jun | 16-Jun | 21-Jun | 01-Sep | 17-Sep | 19-Sep | 06-Oct | 75 | 101.7 | 103.0 | 136 | 2010-2024 | 14 |
| KIMBERLY | 22-May | 11-Jun | 10-Jun | 29-Jun | 08-Sep | 21-Sep | 20-Sep | 08-Oct | 88 | 109.0 | 105.0 | 139 | 1936-1942 | 5 |
| Kimberly Mine | 12-May | 04-Jun | 30-May | 20-Jun | 15-Sep | 01-Oct | 28-Sep | 22-Oct | 101 | 119.9 | 116.0 | 150 | 1980-2024 | 9 |
| Kings Cabin | 27-May | 25-Jun | 21-Jun | 20-Jul | 25-Jul | 02-Sep | 06-Sep | 02-Oct | 7 | 71.1 | 78.5 | 114 | 1979-2024 | 34 |
| KINGS POINT - DUTCH JOHN 16ESE | 20-Apr | 11-May | 09-May | 13-Jun | 08-Sep | 01-Oct | 05-Oct | 25-Oct | 88 | 144.0 | 145.0 | 179 | 1986-2024 | 39 |
| Klondike Narrows | 09-May | 11-Jun | 17-Jun | 25-Jun | 01-Sep | 25-Sep | 22-Sep | 26-Oct | 75 | 106.8 | 105.0 | 170 | 2009-2024 | 15 |
| KNOLLS 10 NE | 11-Apr | 10-May | 09-May | 03-Jul | 19-Sep | 03-Oct | 07-Oct | 19-Oct | 132 | 150.9 | 152.0 | 173 | 1986-2004 | 13 |
| KODACHROME BASIN PARK | 21-Apr | 29-May | 28-May | 30-Jun | 31-Aug | 26-Sep | 24-Sep | 24-Oct | 72 | 121.5 | 120.0 | 171 | 1979-2024 | 43 |
| Kolob | 09-May | 26-May | 23-May | 18-Jun | 22-Sep | 06-Oct | 02-Oct | 23-Oct | 106 | 134.4 | 136.0 | 153 | 1979-2024 | 8 |
| KOOSHAREM | 24-May | 18-Jun | 17-Jun | 12-Jul | 12-Aug | 07-Sep | 11-Sep | 02-Oct | 43 | 81.7 | 84.5 | 122 | 1893-2009 | 52 |
| LA SAL | 29-Apr | 31-May | 30-May | 30-Jun | 10-Sep | 28-Sep | 27-Sep | 24-Oct | 79 | 121.0 | 122.0 | 162 | 1901-1978 | 41 |
| LA SAL 1SW | 20-Apr | 25-May | 25-May | 25-Jun | 08-Sep | 29-Sep | 28-Sep | 30-Oct | 81 | 127.9 | 130.0 | 177 | 1978-2024 | 40 |
| LA VERKIN | 12-Feb | 06-Apr | 08-Apr | 24-May | 05-Oct | 30-Oct | 30-Oct | 23-Nov | 158 | 208.9 | 211.5 | 267 | 1950-2024 | 58 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: IN - LA
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| Lakefork #1 | 10-Jun | 07-Jul | 06-Jul | 24-Jul | 25-Jul | 10-Aug | 07-Aug | 18-Sep | 1† | 35.5 | 34.0 | 87 | 1979-2024 | 35 |
| Lakefork #3 | 08-May | 30-May | 26-May | 23-Jun | 07-Aug | 24-Sep | 23-Sep | 27-Oct | 45 | 117.8 | 124.0 | 164 | 2010-2024 | 11 |
| Lakefork Basin | 08-Jun | 23-Jun | 22-Jun | 13-Jul | 31-Jul | 29-Aug | 31-Aug | 19-Sep | 27 | 66.9 | 65.5 | 102 | 1981-2016 | 26 |
| LAKEPOINT | 02-Apr | 03-May | 05-May | 29-May | 21-Sep | 30-Sep | 30-Sep | 11-Oct | 130 | 151.0 | 149.0 | 176 | 1924-1929 | 4 |
| LAKESIDE | 31-Mar | 17-Apr | 18-Apr | 30-Apr | 22-Oct | 26-Oct | 24-Oct | 03-Nov | 175 | 190.8 | 189.0 | 210 | 1952-1968 | 4 |
| LAKETOWN | 08-May | 14-Jun | 13-Jun | 22-Jul | 03-Aug | 11-Sep | 12-Sep | 23-Oct | 27 | 90.0 | 87.0 | 165 | 1900-2024 | 121 |
| Lasal Mountain | 27-Apr | 01-Jun | 30-May | 02-Jul | 04-Sep | 26-Sep | 24-Sep | 23-Oct | 65 | 118.2 | 119.0 | 156 | 1981-2024 | 29 |
| Lasal Mountain-Lower | 01-May | 21-May | 24-May | 23-Jun | 08-Sep | 06-Oct | 08-Oct | 28-Oct | 91 | 138.7 | 147.0 | 158 | 2012-2024 | 11 |
| LAVA POINT UTAH | 11-May | 06-Jun | 07-Jun | 30-Jun | 30-Aug | 22-Sep | 22-Sep | 23-Oct | 70 | 109.3 | 110.0 | 153 | 1995-2024 | 28 |
| LAYTON | 28-Apr | 14-May | 14-May | 30-May | 25-Oct | 26-Oct | 26-Oct | 27-Oct | 150 | 165.0 | 165.0 | 180 | 2011-2013 | 2 |
| LEEDS NEAR | 28-Mar | 17-Apr | 19-Apr | 13-May | 11-Oct | 06-Nov | 12-Nov | 28-Nov | 175 | 204.2 | 196.0 | 239 | 1912-1939 | 13 |
| LEHI | 01-May | 04-Jun | 13-Jun | 23-Jun | 14-Sep | 14-Sep | 14-Sep | 16-Sep | 93 | 108.0 | 95.0 | 136 | 1914-1923 | 3 |
| LEMAY | 10-Mar | 28-Apr | 24-Apr | 05-Jun | 10-Sep | 06-Oct | 09-Oct | 27-Oct | 102 | 163.9 | 168.0 | 229 | 1911-1931 | 16 |
| LEVAN | 09-Apr | 22-May | 21-May | 30-Jun | 29-Aug | 29-Sep | 29-Sep | 28-Oct | 79 | 131.2 | 129.0 | 192 | 1893-2024 | 123 |
| LEWISTON | 16-Apr | 26-May | 24-May | 30-Jun | 08-Aug | 15-Sep | 15-Sep | 13-Oct | 50 | 112.9 | 114.0 | 150 | 1925-1976 | 50 |
| Lightning Ridge | 07-May | 06-Jun | 09-Jun | 21-Jun | 05-Sep | 28-Sep | 02-Oct | 22-Oct | 80 | 114.9 | 118.0 | 157 | 2004-2024 | 15 |
| Lily Lake | 12-May | 24-Jun | 22-Jun | 24-Jul | 25-Jul | 01-Sep | 05-Sep | 22-Sep | 1† | 70.1 | 72.0 | 133 | 1980-2024 | 33 |
| LINWOOD | 28-Jun | 28-Jun | 28-Jun | 28-Jun | 13-Sep | 13-Sep | 14-Sep | 14-Sep | 77 | 77.0 | 77.0 | 77 | 1941-1943 | 1 |
| Little Bear | 26-Apr | 24-May | 22-May | 18-Jun | 17-Sep | 08-Oct | 06-Oct | 28-Oct | 111 | 139.1 | 128.5 | 185 | 1979-2024 | 16 |
| Little Grassy | 02-Apr | 04-May | 03-May | 27-May | 28-Sep | 17-Oct | 18-Oct | 13-Nov | 144 | 165.6 | 162.0 | 201 | 1986-2024 | 16 |
| LITTLE SAHARA REC AREA | 20-Apr | 29-May | 25-May | 06-Jul | 12-Aug | 22-Sep | 23-Sep | 28-Oct | 67 | 118.5 | 118.0 | 191 | 1979-2024 | 29 |
| LOA | 12-May | 13-Jun | 13-Jun | 18-Jul | 31-Jul | 07-Sep | 10-Sep | 06-Oct | 37 | 86.8 | 85.5 | 137 | 1893-2024 | 98 |
| LOGAN 5 SW EXP FARM | 17-Apr | 20-May | 17-May | 21-Jun | 03-Sep | 23-Sep | 22-Sep | 22-Oct | 82 | 128.6 | 128.5 | 178 | 1969-2024 | 48 |
| LOGAN CACHE AP | 28-Apr | 22-May | 17-May | 18-Jun | 07-Sep | 25-Sep | 25-Sep | 26-Oct | 95 | 127.2 | 122.0 | 181 | 1999-2024 | 26 |
| LOGAN RADIO KVNU | 17-Apr | 16-May | 11-May | 23-Jun | 08-Sep | 28-Sep | 28-Sep | 24-Oct | 94 | 136.8 | 136.0 | 171 | 1957-2024 | 61 |
| LOGAN SUGAR FACTORY | 05-May | 24-May | 20-May | 19-Jun | 09-Sep | 16-Sep | 15-Sep | 28-Sep | 88 | 116.5 | 115.0 | 137 | 1925-1941 | 13 |
| LOGAN USU EXP STN | 25-Apr | 15-May | 13-May | 21-Jun | 30-Aug | 25-Sep | 24-Sep | 24-Oct | 94 | 135.0 | 135.0 | 182 | 1951-1978 | 26 |
| LOGAN UTAH ST UNIV | 05-Apr | 06-May | 05-May | 17-Jun | 12-Sep | 12-Oct | 13-Oct | 09-Nov | 95 | 159.6 | 162.0 | 203 | 1893-2024 | 119 |
| Lonesome Beaver | 03-May | 22-May | 22-May | 09-Jun | 08-Sep | 07-Oct | 09-Oct | 29-Oct | 91 | 139.6 | 142.0 | 158 | 2015-2024 | 10 |
| Long Flat | 29-Apr | 28-May | 29-May | 18-Jun | 16-Sep | 05-Oct | 06-Oct | 22-Oct | 106 | 130.6 | 128.5 | 157 | 1980-2024 | 16 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: LA - LO
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| Long Valley Jct | 29-Apr | 22-May | 22-May | 09-Jun | 08-Sep | 04-Oct | 04-Oct | 24-Oct | 91 | 136.1 | 139.0 | 158 | 1986-2024 | 20 |
| Lookout Peak | 08-May | 12-Jun | 13-Jun | 11-Jul | 24-Aug | 18-Sep | 19-Sep | 22-Oct | 61 | 99.2 | 99.0 | 137 | 1988-2024 | 33 |
| LOST CREEK - SALINA 12S UTAH | 02-May | 28-May | 29-May | 18-Jun | 08-Sep | 04-Oct | 04-Oct | 29-Oct | 92 | 129.4 | 128.0 | 166 | 1991-2024 | 34 |
| Lost Creek Resv | 08-May | 07-Jun | 11-Jun | 21-Jun | 01-Sep | 15-Sep | 13-Sep | 09-Oct | 84 | 101.6 | 98.0 | 137 | 2011-2024 | 14 |
| Louis Meadow | 03-May | 28-May | 23-May | 18-Jun | 06-Sep | 28-Sep | 27-Sep | 23-Oct | 82 | 124.2 | 124.0 | 160 | 2000-2024 | 15 |
| LOW | 29-Apr | 03-May | 02-May | 05-May | 29-Aug | 01-Oct | 04-Oct | 19-Oct | 133 | 146.5 | 148.5 | 156 | 1911-1919 | 4 |
| LOWER AMERI FORK PWHS | 02-Apr | 02-May | 01-May | 11-Jun | 23-Sep | 19-Oct | 20-Oct | 14-Nov | 120 | 170.7 | 172.5 | 207 | 1914-1957 | 40 |
| LOWER MILL CREEK | 31-Mar | 01-May | 01-May | 07-Jun | 15-Sep | 17-Oct | 19-Oct | 13-Nov | 127 | 171.2 | 171.0 | 208 | 1914-1953 | 35 |
| LUCIN | 18-Apr | 24-May | 23-May | 22-Jul | 28-Jul | 20-Sep | 22-Sep | 02-Nov | 6 | 119.8 | 127.0 | 195 | 1905-1990 | 39 |
| LUND | 03-May | 30-May | 31-May | 03-Jul | 01-Sep | 18-Sep | 18-Sep | 13-Oct | 62 | 112.0 | 114.0 | 145 | 1901-1967 | 27 |
| LYTLE RCH | 29-Jan | 13-Apr | 18-Apr | 01-Jun | 21-Sep | 25-Oct | 26-Oct | 21-Nov | 149 | 197.6 | 197.5 | 297 | 1988-2024 | 14 |
| MAESER 9NW | 24-Apr | 27-May | 30-May | 17-Jun | 12-Sep | 25-Sep | 23-Sep | 15-Oct | 99 | 121.8 | 120.0 | 166 | 1983-2009 | 25 |
| MAGNA ASARCO FARM | 16-May | 22-May | 22-May | 28-May | 20-Oct | 21-Oct | 21-Oct | 22-Oct | 1951-1957 | 0* | ||||
| MAMMOTH RS | 19-May | 19-May | 19-May | 19-May | 27-Oct | 27-Oct | 27-Oct | 27-Oct | 161 | 161.0 | 161.0 | 161 | 1896-1940 | 1 |
| Mammoth-Cottonwood | 12-May | 17-Jun | 17-Jun | 19-Jul | 27-Jul | 09-Sep | 12-Sep | 20-Oct | 22 | 84.8 | 87.0 | 149 | 1979-2024 | 35 |
| MANILA | 22-Apr | 31-May | 31-May | 10-Jul | 15-Aug | 18-Sep | 18-Sep | 23-Oct | 62 | 111.0 | 113.0 | 161 | 1910-2024 | 59 |
| MANILA 18 ESE | 03-May | 06-May | 05-May | 08-May | 26-Sep | 30-Sep | 30-Sep | 04-Oct | 146 | 147.5 | 147.5 | 149 | 2012-2014 | 2 |
| MANTI | 07-Apr | 24-May | 23-May | 03-Jul | 02-Sep | 27-Sep | 25-Sep | 28-Oct | 79 | 126.9 | 128.0 | 175 | 1894-2024 | 121 |
| MANTI RADIO KMTI | 12-May | 04-Jun | 05-Jun | 30-Jun | 10-Sep | 18-Sep | 20-Sep | 25-Sep | 73 | 107.4 | 106.0 | 134 | 2016-2024 | 8 |
| MARYSVALE | 29-Apr | 02-Jun | 01-Jun | 30-Jun | 24-Aug | 18-Sep | 18-Sep | 09-Oct | 68 | 108.1 | 110.0 | 147 | 1913-2023 | 57 |
| MARYSVALE 3 | 21-May | 10-Jun | 10-Jun | 06-Jul | 31-Aug | 15-Sep | 15-Sep | 03-Oct | 73 | 98.3 | 92.0 | 134 | 1901-1913 | 12 |
| MCCOOK RIDGE | 28-Apr | 20-May | 14-May | 17-Jun | 02-Sep | 29-Sep | 27-Sep | 29-Oct | 91 | 133.3 | 132.5 | 169 | 1983-2024 | 38 |
| Merchant Valley | 22-May | 12-Jun | 11-Jun | 30-Jun | 28-Aug | 17-Sep | 19-Sep | 18-Oct | 66 | 99.5 | 101.0 | 134 | 1980-2024 | 21 |
| MEXICAN HAT | 19-Mar | 20-Apr | 19-Apr | 31-May | 21-Sep | 23-Oct | 23-Oct | 15-Nov | 143 | 187.9 | 188.0 | 233 | 1940-2019 | 59 |
| MEXICAN HAT 10 NW | 15-Apr | 22-Apr | 19-Apr | 02-May | 05-Oct | 19-Oct | 25-Oct | 27-Oct | 169 | 180.0 | 178.0 | 193 | 2011-2014 | 3 |
| MIDLAKE | 11-Mar | 10-Apr | 09-Apr | 07-May | 18-Sep | 08-Nov | 10-Nov | 12-Dec | 150 | 210.7 | 207.5 | 254 | 1911-1981 | 18 |
| MIDVALE | 06-Apr | 13-May | 13-May | 14-Jun | 04-Sep | 30-Sep | 28-Sep | 07-Nov | 94 | 140.4 | 140.0 | 188 | 1912-1971 | 47 |
| MIDWAY 3 NE | 01-Jun | 07-Jun | 10-Jun | 10-Jun | 07-Sep | 26-Sep | 01-Oct | 07-Oct | 116 | 117.7 | 118.0 | 119 | 2010-2014 | 3 |
| Midway Valley | 23-May | 12-Jun | 11-Jun | 30-Jun | 31-Aug | 15-Sep | 16-Sep | 05-Oct | 63 | 96.9 | 101.5 | 125 | 1980-2024 | 22 |
| MILFORD | 23-Apr | 25-May | 23-May | 21-Jun | 02-Sep | 23-Sep | 22-Sep | 21-Oct | 75 | 122.1 | 124.0 | 158 | 1928-2024 | 69 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: LO - MI
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| MILFORD 42 WNW | 03-May | 09-May | 05-May | 19-May | 27-Sep | 03-Oct | 06-Oct | 07-Oct | 141 | 147.3 | 147.0 | 154 | 2011-2014 | 3 |
| MILFORD MUNI AP | 23-Apr | 24-May | 23-May | 21-Jun | 02-Sep | 25-Sep | 24-Sep | 28-Oct | 75 | 124.6 | 126.0 | 184 | 1928-2024 | 85 |
| Mill-D North | 07-May | 07-Jun | 08-Jun | 03-Jul | 24-Aug | 23-Sep | 21-Sep | 27-Oct | 63 | 109.1 | 108.0 | 164 | 1989-2024 | 31 |
| MILLS | 01-Jun | 04-Jun | 01-Jun | 12-Jun | 13-Sep | 17-Sep | 18-Sep | 22-Sep | 93 | 104.7 | 109.0 | 112 | 1912-1920 | 3 |
| MINERSVILLE | 02-Apr | 10-May | 15-May | 04-Jun | 24-Sep | 02-Oct | 02-Oct | 15-Oct | 120 | 138.0 | 135.0 | 159 | 1897-2013 | 3 |
| Mining Fork | 27-Apr | 01-Jun | 03-Jun | 29-Jun | 08-Sep | 01-Oct | 01-Oct | 29-Oct | 71 | 123.9 | 121.0 | 185 | 1989-2024 | 21 |
| MOAB | 08-Mar | 18-Apr | 17-Apr | 18-May | 16-Sep | 17-Oct | 18-Oct | 09-Nov | 136 | 182.8 | 182.0 | 239 | 1893-2024 | 115 |
| MOAB CANYONLAND AP | 09-Apr | 26-Apr | 24-Apr | 29-May | 02-Oct | 16-Oct | 15-Oct | 10-Nov | 142 | 174.0 | 175.5 | 206 | 1998-2024 | 26 |
| MODENA | 30-Apr | 31-May | 31-May | 30-Jun | 23-Aug | 22-Sep | 22-Sep | 12-Oct | 54 | 115.3 | 116.0 | 144 | 1948-2004 | 47 |
| Monte Cristo | 08-May | 15-Jun | 15-Jun | 18-Jul | 03-Aug | 13-Sep | 16-Sep | 22-Oct | 28 | 91.3 | 89.0 | 137 | 1979-2024 | 35 |
| MONTEZUMA CREEK | 15-May | 27-May | 29-May | 07-Jun | 13-Sep | 04-Oct | 10-Oct | 21-Oct | 112 | 131.2 | 130.0 | 151 | 1946-1956 | 6 |
| MONTICELLO #2 | 29-Apr | 19-May | 21-May | 09-Jun | 09-Sep | 07-Oct | 07-Oct | 28-Oct | 92 | 141.8 | 147.5 | 166 | 2011-2024 | 12 |
| MONTICELLO 24 NW | 29-Apr | 02-May | 02-May | 03-May | 05-Oct | 06-Oct | 07-Oct | 07-Oct | 155 | 158.0 | 158.0 | 161 | 2011-2014 | 3 |
| MONTICELLO 2E | 25-Apr | 28-May | 29-May | 27-Jun | 08-Aug | 29-Sep | 02-Oct | 01-Nov | 83 | 124.9 | 125.0 | 175 | 1902-2011 | 89 |
| MONUMENT VLY GOULDINGS | 23-Apr | 23-Apr | 23-Apr | 23-Apr | 24-Oct | 30-Oct | 31-Oct | 06-Nov | 197 | 197.0 | 197.0 | 197 | 1956-1960 | 1 |
| MONUMENT VLY MISSION | 17-Mar | 18-Apr | 21-Apr | 07-May | 10-Oct | 02-Nov | 05-Nov | 19-Nov | 172 | 203.3 | 201.0 | 229 | 1962-1989 | 10 |
| MOON LAKE | 29-May | 20-Jun | 24-Jun | 05-Jul | 27-Jul | 08-Sep | 11-Sep | 16-Oct | 22 | 80.6 | 78.0 | 118 | 1935-2024 | 28 |
| MORGAN | 27-Apr | 06-Jun | 03-Jun | 24-Jul | 29-Jul | 11-Sep | 12-Sep | 14-Oct | 23 | 97.1 | 100.5 | 160 | 1903-2024 | 98 |
| MORONI | 01-May | 02-Jun | 01-Jun | 03-Jul | 07-Aug | 18-Sep | 19-Sep | 18-Oct | 47 | 109.6 | 109.5 | 156 | 1908-2024 | 88 |
| Mosby Mtn. | 30-May | 16-Jun | 17-Jun | 05-Jul | 09-Aug | 06-Sep | 10-Sep | 20-Sep | 49 | 83.3 | 85.0 | 111 | 1979-2024 | 17 |
| MOSIDA | 05-May | 27-May | 29-May | 12-Jun | 11-Sep | 23-Sep | 21-Sep | 09-Oct | 99 | 118.0 | 108.0 | 157 | 1911-1924 | 4 |
| MOUNTAIN HOME | 14-Jun | 14-Jun | 14-Jun | 14-Jun | 15-Sep | 15-Sep | 15-Sep | 15-Sep | 93 | 93.0 | 93.0 | 93 | 1912-1918 | 1 |
| Mt Baldy | 10-May | 04-Jun | 28-May | 30-Jun | 08-Sep | 28-Sep | 25-Sep | 23-Oct | 70 | 116.4 | 118.5 | 152 | 2012-2024 | 12 |
| MT EMMONS | 01-May | 25-May | 04-Jun | 08-Jun | 14-Sep | 21-Sep | 21-Sep | 28-Sep | 109 | 119.0 | 112.0 | 136 | 1949-1953 | 3 |
| MT. PLEASANT | 08-May | 28-May | 29-May | 14-Jun | 11-Sep | 29-Sep | 01-Oct | 15-Oct | 102 | 125.3 | 123.0 | 160 | 1894-1910 | 7 |
| MTN DELL DAM | 15-Apr | 28-May | 24-May | 30-Jun | 20-Aug | 23-Sep | 22-Sep | 28-Oct | 65 | 119.7 | 120.5 | 195 | 1920-2024 | 76 |
| MUD SPRING - EUREKA 13SW UTAH | 18-Apr | 22-May | 20-May | 18-Jun | 09-Sep | 03-Oct | 04-Oct | 28-Oct | 87 | 135.0 | 133.0 | 193 | 1991-2024 | 34 |
| MURRAY | 27-Apr | 08-May | 04-May | 30-May | 24-Sep | 05-Oct | 08-Oct | 14-Oct | 129 | 148.8 | 150.5 | 165 | 1924-1929 | 4 |
| MYTON | 23-Apr | 22-May | 22-May | 05-Jul | 09-Sep | 29-Sep | 28-Sep | 28-Oct | 79 | 134.3 | 132.0 | 179 | 1916-2024 | 63 |
| NATURAL BRIDGES NM | 17-Apr | 15-May | 12-May | 18-Jun | 13-Sep | 09-Oct | 08-Oct | 11-Nov | 106 | 148.8 | 154.0 | 200 | 1965-2024 | 53 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: MI - NA
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| NAVAJO MTN | 03-May | 18-May | 14-May | 13-Jun | 04-Sep | 05-Oct | 06-Oct | 07-Nov | 111 | 137.3 | 135.0 | 174 | 1957-1975 | 7 |
| NEOLA | 25-Apr | 24-May | 21-May | 30-Jun | 23-Aug | 27-Sep | 25-Sep | 28-Oct | 54 | 126.8 | 127.0 | 165 | 1956-2024 | 54 |
| NEPHI | 11-Apr | 14-May | 14-May | 14-Jun | 09-Sep | 03-Oct | 04-Oct | 04-Nov | 94 | 142.9 | 140.0 | 204 | 1904-2024 | 75 |
| NEPHI 5 SSW | 10-May | 08-Jun | 03-Jun | 03-Jul | 31-Aug | 21-Sep | 22-Sep | 15-Oct | 79 | 107.3 | 112.0 | 140 | 1906-1941 | 18 |
| NEW HARMONY | 14-Apr | 12-May | 10-May | 06-Jun | 13-Sep | 11-Oct | 13-Oct | 07-Nov | 117 | 152.0 | 152.0 | 190 | 1911-2024 | 63 |
| NEWCASTLE | 27-Apr | 27-Apr | 27-Apr | 27-Apr | 29-Sep | 29-Sep | 29-Sep | 29-Sep | 1911-1926 | 0* | ||||
| NORTH LONG POINT UTAH | 27-Apr | 27-May | 28-May | 23-Jun | 04-Sep | 29-Sep | 02-Oct | 27-Oct | 81 | 125.0 | 124.5 | 157 | 1998-2024 | 24 |
| NORWAY - KAMAS 10 W UTAH | 29-May | 19-Jun | 18-Jun | 11-Jul | 27-Jul | 07-Sep | 11-Sep | 02-Oct | 46 | 81.0 | 84.0 | 105 | 1984-2024 | 29 |
| NUTTERS RCH | 26-Apr | 20-May | 16-May | 18-Jun | 02-Sep | 27-Sep | 25-Sep | 23-Oct | 76 | 130.0 | 126.5 | 164 | 1964-2024 | 26 |
| OAK CITY | 14-Apr | 13-May | 13-May | 19-Jun | 04-Sep | 08-Oct | 08-Oct | 08-Nov | 94 | 149.9 | 153.0 | 203 | 1905-2024 | 102 |
| Oak Creek | 02-May | 22-May | 21-May | 18-Jun | 08-Sep | 06-Oct | 06-Oct | 29-Oct | 92 | 135.8 | 139.0 | 167 | 2010-2024 | 13 |
| OGDEN 2 | 18-Apr | 12-May | 09-May | 16-Jun | 10-Sep | 05-Oct | 06-Oct | 26-Oct | 92 | 147.0 | 151.0 | 182 | 1893-1940 | 23 |
| OGDEN HILL AFB | 02-Apr | 30-Apr | 30-Apr | 23-May | 17-Sep | 19-Oct | 21-Oct | 08-Nov | 132 | 172.2 | 171.0 | 209 | 1948-1970 | 22 |
| OGDEN HINKLEY AP | 01-Apr | 25-Apr | 23-Apr | 19-May | 28-Sep | 22-Oct | 24-Oct | 16-Nov | 138 | 180.8 | 179.0 | 229 | 1948-2024 | 30 |
| OGDEN NE BENCH | 15-Apr | 30-Apr | 29-Apr | 30-May | 10-Oct | 24-Oct | 25-Oct | 17-Nov | 149 | 177.7 | 178.0 | 216 | 2011-2024 | 14 |
| OGDEN PIONEER PH | 22-Mar | 30-Apr | 01-May | 25-May | 17-Sep | 16-Oct | 17-Oct | 13-Nov | 133 | 170.7 | 168.0 | 221 | 1902-2011 | 68 |
| OGDEN SUGAR FACTORY | 02-Apr | 05-May | 05-May | 02-Jun | 17-Sep | 10-Oct | 12-Oct | 09-Nov | 121 | 159.9 | 160.5 | 204 | 1925-2009 | 76 |
| OLMSTEAD PH | 08-Apr | 03-May | 07-May | 19-May | 18-Sep | 13-Oct | 12-Oct | 12-Nov | 134 | 164.8 | 166.0 | 205 | 1977-2003 | 26 |
| ORDERVILLE | 21-Apr | 21-May | 19-May | 29-Jun | 01-Sep | 04-Oct | 05-Oct | 26-Oct | 79 | 136.5 | 137.0 | 177 | 1910-2014 | 61 |
| OREM TRTMT PLT | 20-Mar | 22-Apr | 21-Apr | 11-May | 28-Sep | 20-Oct | 16-Oct | 15-Nov | 140 | 181.6 | 180.0 | 217 | 1983-2010 | 22 |
| ORRS RCH | 21-May | 09-Jun | 08-Jun | 30-Jun | 29-Jul | 09-Sep | 10-Sep | 04-Oct | 73 | 95.3 | 92.5 | 118 | 1925-1949 | 18 |
| OTTER CREEK DAM | 21-May | 07-Jun | 13-Jun | 18-Jun | 13-Sep | 16-Sep | 16-Sep | 19-Sep | 87 | 92.5 | 92.5 | 98 | 1977-1981 | 2 |
| OTTER CREEK UTAH | 09-May | 03-Jun | 08-Jun | 21-Jun | 01-Sep | 26-Sep | 25-Sep | 27-Oct | 81 | 115.5 | 114.0 | 164 | 2003-2024 | 22 |
| OURAY 4NE | 14-Apr | 09-May | 08-May | 14-Jun | 17-Aug | 27-Sep | 28-Sep | 15-Oct | 89 | 141.9 | 143.0 | 182 | 1941-2024 | 55 |
| PAHREAH | 31-Mar | 17-Apr | 08-Apr | 20-May | 21-Sep | 06-Oct | 10-Oct | 16-Oct | 147 | 173.3 | 176.5 | 193 | 1895-1900 | 4 |
| PANGUITCH | 19-May | 20-Jun | 21-Jun | 23-Jul | 25-Jul | 05-Sep | 07-Sep | 06-Oct | 26 | 77.8 | 76.0 | 128 | 1904-2024 | 91 |
| Panguitch Lake RS | 04-May | 24-May | 23-May | 11-Jun | 09-Sep | 30-Sep | 01-Oct | 23-Oct | 93 | 129.5 | 130.0 | 157 | 2014-2024 | 10 |
| PARIA RS | 16-Apr | 03-May | 26-Apr | 09-Jun | 03-Oct | 22-Oct | 25-Oct | 07-Nov | 134 | 172.8 | 176.0 | 193 | 1999-2024 | 10 |
| PARK CITY | 09-May | 05-Jun | 08-Jun | 28-Jun | 16-Aug | 13-Sep | 12-Sep | 16-Oct | 78 | 105.0 | 95.0 | 144 | 1993-2024 | 14 |
| PARK CITY G.C. | 03-May | 12-Jun | 08-Jun | 20-Jul | 01-Aug | 13-Sep | 15-Sep | 17-Oct | 14 | 95.1 | 103.0 | 141 | 1896-1991 | 43 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: NE - PA
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| PARK CITY MEADOWS | 07-Jul | 07-Jul | 07-Jul | 07-Jul | 05-Sep | 05-Sep | 05-Sep | 05-Sep | 60 | 60.0 | 60.0 | 60 | 1979-1980 | 1 |
| PARK CITY NORANDA MINE | 15-Jun | 15-Jun | 15-Jun | 15-Jun | 26-Sep | 26-Sep | 26-Sep | 26-Sep | 103 | 103.0 | 103.0 | 103 | 1981-1982 | 1 |
| PARK CITY SUMMIT HOUSE | 23-May | 18-Jun | 26-Jun | 30-Jun | 20-Aug | 09-Sep | 05-Sep | 03-Oct | 67 | 84.3 | 85.0 | 120 | 1969-1977 | 9 |
| PARK VALLEY | 26-Apr | 26-May | 23-May | 30-Jun | 23-Aug | 25-Sep | 24-Sep | 05-Nov | 82 | 124.8 | 125.5 | 181 | 1911-1990 | 48 |
| PARK VALLEY MUDDY RCH | 10-May | 27-May | 21-May | 19-Jun | 03-Sep | 24-Sep | 22-Sep | 21-Oct | 76 | 118.6 | 121.0 | 164 | 1970-1982 | 9 |
| Parleys Summit | 07-May | 03-Jun | 09-Jun | 21-Jun | 04-Sep | 26-Sep | 24-Sep | 30-Oct | 86 | 118.2 | 121.5 | 167 | 1979-2024 | 26 |
| PAROWAN | 17-Apr | 24-May | 21-May | 03-Jul | 02-Sep | 29-Sep | 27-Sep | 31-Oct | 83 | 128.8 | 128.0 | 180 | 1893-2024 | 97 |
| Parrish Creek | 28-Apr | 31-May | 03-Jun | 21-Jun | 08-Sep | 30-Sep | 02-Oct | 29-Oct | 86 | 123.8 | 121.0 | 172 | 2000-2024 | 25 |
| PARTOUN | 21-Apr | 22-May | 21-May | 30-Jun | 26-Aug | 22-Sep | 22-Sep | 31-Oct | 75 | 124.1 | 124.0 | 193 | 1905-2024 | 71 |
| Payson R.S. | 07-May | 02-Jun | 01-Jun | 22-Jun | 04-Sep | 29-Sep | 30-Sep | 27-Oct | 85 | 119.6 | 121.0 | 164 | 1980-2024 | 27 |
| Pickle Keg | 04-May | 29-May | 30-May | 18-Jun | 16-Sep | 02-Oct | 02-Oct | 29-Oct | 102 | 127.1 | 124.5 | 158 | 1979-2024 | 18 |
| Pine Creek | 11-May | 02-Jun | 31-May | 18-Jun | 10-Sep | 01-Oct | 01-Oct | 29-Oct | 85 | 122.2 | 122.5 | 158 | 1985-2024 | 16 |
| PINEVIEW | 14-Jun | 30-Jun | 02-Jul | 08-Jul | 26-Jul | 18-Aug | 30-Aug | 05-Sep | 46 | 57.8 | 61.0 | 63 | 1911-1923 | 4 |
| PINEVIEW DAM | 14-Apr | 24-May | 21-May | 09-Jul | 25-Aug | 25-Sep | 22-Sep | 05-Nov | 55 | 125.4 | 122.0 | 205 | 1935-2024 | 80 |
| PINTO | 07-Jun | 23-Jun | 24-Jun | 06-Jul | 26-Jul | 06-Sep | 10-Sep | 27-Sep | 27 | 73.4 | 78.0 | 90 | 1897-1940 | 19 |
| PIUTE DAM | 04-May | 27-May | 28-May | 30-Jun | 04-Sep | 25-Sep | 24-Sep | 14-Oct | 101 | 122.1 | 119.0 | 154 | 1912-1971 | 40 |
| PLATEAU | 24-Jun | 05-Jul | 30-Jun | 19-Jul | 01-Aug | 23-Aug | 24-Aug | 18-Sep | 28 | 50.0 | 51.5 | 64 | 1902-1907 | 6 |
| PLEASANT CK POWERHOUSE | 05-Jun | 15-Jun | 18-Jun | 22-Jun | 20-Aug | 04-Sep | 09-Sep | 15-Sep | 59 | 81.3 | 83.0 | 102 | 1956-1967 | 3 |
| PLEASANT GROVE | 20-Mar | 05-May | 06-May | 14-Jun | 13-Sep | 12-Oct | 13-Oct | 12-Nov | 110 | 160.3 | 159.0 | 228 | 1947-2024 | 69 |
| PLEASANT GROVE UTAH | 26-Mar | 28-Apr | 29-Apr | 24-May | 01-Oct | 26-Oct | 26-Oct | 22-Nov | 150 | 179.5 | 179.0 | 236 | 1997-2024 | 23 |
| PLYMOUTH | 24-Apr | 19-May | 30-May | 02-Jun | 30-Aug | 09-Sep | 10-Sep | 19-Sep | 89 | 113.3 | 112.0 | 139 | 1940-2024 | 3 |
| PRICE 3 E | 29-Apr | 01-May | 01-May | 03-May | 28-Sep | 11-Oct | 11-Oct | 24-Oct | 148 | 163.0 | 163.0 | 178 | 2012-2014 | 2 |
| PRICE BLM | 06-Apr | 13-May | 15-May | 14-Jun | 16-Sep | 06-Oct | 09-Oct | 05-Nov | 118 | 146.2 | 144.0 | 188 | 1969-2017 | 18 |
| PRICE CARBON CO AP | 16-Apr | 09-May | 09-May | 13-Jun | 23-Sep | 11-Oct | 11-Oct | 30-Oct | 117 | 155.2 | 155.0 | 195 | 1999-2024 | 26 |
| PRICE GAME FARM | 08-Apr | 12-May | 12-May | 03-Jul | 17-Aug | 02-Oct | 05-Oct | 24-Oct | 80 | 143.3 | 145.5 | 190 | 1889-1968 | 40 |
| PROVO 22 E | 02-Jul | 12-Jul | 10-Jul | 23-Jul | 03-Aug | 04-Aug | 03-Aug | 06-Aug | 14 | 23.3 | 24.0 | 32 | 2011-2014 | 3 |
| PROVO AP | 04-Apr | 28-Apr | 10-May | 13-May | 01-Oct | 11-Oct | 12-Oct | 22-Oct | 144 | 167.4 | 164.0 | 190 | 1948-2024 | 5 |
| PROVO BYU | 20-Mar | 28-Apr | 28-Apr | 11-Jun | 19-Sep | 15-Oct | 13-Oct | 17-Nov | 116 | 171.0 | 172.0 | 230 | 1917-2024 | 57 |
| PROVO RADIO KAYK | 20-Apr | 20-May | 17-May | 30-Jun | 17-Aug | 19-Sep | 19-Sep | 15-Oct | 57 | 125.9 | 127.0 | 178 | 1952-1977 | 18 |
| RANCH | 03-Jun | 26-Jun | 27-Jun | 18-Jul | 29-Jul | 01-Sep | 05-Sep | 03-Oct | 22 | 69.3 | 76.0 | 95 | 1902-1914 | 12 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: PA - RA
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| RANDOLPH | 21-May | 26-Jun | 24-Jun | 22-Jul | 25-Jul | 20-Aug | 24-Aug | 19-Sep | 3 | 55.4 | 58.5 | 88 | 1893-2024 | 38 |
| RAYS VALLEY UTAH | 07-May | 02-Jun | 03-Jun | 22-Jun | 06-Sep | 26-Sep | 24-Sep | 23-Oct | 81 | 117.5 | 117.0 | 160 | 1996-2024 | 26 |
| RED BUTTE 1 | 04-Apr | 16-Apr | 16-Apr | 28-Apr | 17-Oct | 21-Oct | 22-Oct | 26-Oct | 172 | 188.5 | 188.5 | 205 | 1931-1933 | 2 |
| Red Pine Ridge | 28-May | 14-Jun | 13-Jun | 05-Jul | 08-Aug | 09-Sep | 16-Sep | 23-Sep | 50 | 88.0 | 91.0 | 112 | 1979-2024 | 17 |
| Redden Mine Lwr | 07-May | 01-Jun | 01-Jun | 22-Jun | 08-Sep | 03-Oct | 02-Oct | 27-Oct | 91 | 124.5 | 125.5 | 164 | 2013-2024 | 12 |
| Rees Flat | 11-May | 13-Jun | 19-Jun | 30-Jun | 01-Sep | 17-Sep | 19-Sep | 01-Oct | 63 | 96.4 | 98.0 | 130 | 2012-2024 | 12 |
| RICHFIELD RADIO KSVC | 18-Apr | 27-May | 24-May | 20-Jul | 22-Aug | 19-Sep | 19-Sep | 16-Oct | 49 | 116.9 | 119.0 | 164 | 1893-2024 | 103 |
| RICHMOND | 17-Apr | 21-May | 19-May | 30-Jun | 23-Aug | 26-Sep | 26-Sep | 27-Oct | 63 | 129.8 | 129.0 | 183 | 1912-2024 | 71 |
| RIVERDALE | 02-Apr | 10-May | 10-May | 25-Jun | 10-Sep | 08-Oct | 10-Oct | 08-Nov | 82 | 150.9 | 151.5 | 203 | 1914-1991 | 68 |
| RIVERTON | 14-May | 22-May | 23-May | 27-May | 13-Sep | 23-Sep | 23-Sep | 04-Oct | 119 | 125.0 | 122.0 | 134 | 1966-1968 | 3 |
| Rock Creek | 08-May | 08-Jun | 10-Jun | 19-Jul | 08-Aug | 18-Sep | 17-Sep | 25-Oct | 20 | 103.3 | 105.0 | 161 | 1980-2024 | 31 |
| Rocky Basin-Settleme | 11-May | 07-Jun | 09-Jun | 11-Jul | 27-Aug | 23-Sep | 23-Sep | 23-Oct | 78 | 109.8 | 107.5 | 160 | 1980-2024 | 18 |
| ROOSEVELT RADIO | 24-Apr | 19-May | 15-May | 14-Jun | 26-Aug | 25-Sep | 25-Sep | 28-Oct | 84 | 129.6 | 129.5 | 169 | 1948-2024 | 70 |
| ROSEBUD UTAH | 23-Apr | 19-May | 18-May | 18-Jun | 09-Sep | 04-Oct | 02-Oct | 04-Nov | 92 | 138.7 | 141.5 | 193 | 2003-2024 | 22 |
| ROSETTE | 27-Apr | 27-May | 27-May | 20-Jun | 26-Aug | 29-Sep | 30-Sep | 27-Oct | 74 | 128.4 | 124.0 | 183 | 1990-2024 | 29 |
| SAHARA | 02-May | 20-May | 15-May | 12-Jun | 12-Sep | 17-Sep | 18-Sep | 23-Sep | 131 | 132.0 | 132.0 | 133 | 1913-1915 | 2 |
| SALDURO | 15-Mar | 14-Apr | 20-Apr | 27-Apr | 10-Oct | 28-Oct | 02-Nov | 06-Nov | 166 | 196.4 | 194.0 | 236 | 1921-1926 | 5 |
| SALINA | 28-Apr | 29-May | 26-May | 30-Jun | 17-Aug | 18-Sep | 17-Sep | 14-Oct | 54 | 112.0 | 115.0 | 156 | 1924-2011 | 46 |
| SALINA 24 E | 06-May | 01-Jun | 27-May | 22-Jul | 02-Sep | 25-Sep | 24-Sep | 23-Oct | 48 | 117.8 | 116.0 | 158 | 1986-2024 | 32 |
| SALINE | 05-May | 11-May | 10-May | 16-May | 14-Oct | 15-Oct | 16-Oct | 17-Oct | 154 | 154.0 | 154.0 | 154 | 1966-1968 | 1 |
| SALT LAKE CITY | 19-Mar | 13-Apr | 13-Apr | 02-May | 11-Oct | 31-Oct | 31-Oct | 21-Nov | 175 | 202.7 | 204.5 | 233 | 1928-1954 | 26 |
| SALT LAKE CITY E BENCH | 31-Mar | 02-May | 29-Apr | 01-Jul | 18-Sep | 18-Oct | 22-Oct | 03-Nov | 139 | 173.6 | 173.5 | 216 | 1990-2005 | 10 |
| SALT LAKE CITY INTL AP | 07-Mar | 22-Apr | 21-Apr | 28-May | 17-Sep | 20-Oct | 22-Oct | 17-Nov | 125 | 182.0 | 187.0 | 243 | 1948-2024 | 77 |
| SALT LAKE CITY SUB SEW | 20-Apr | 05-May | 04-May | 18-May | 15-Sep | 04-Oct | 06-Oct | 25-Oct | 127 | 151.3 | 155.0 | 176 | 1967-1978 | 9 |
| SALT LAKE TRIAD CTR | 16-Feb | 09-Apr | 14-Apr | 01-May | 10-Oct | 06-Nov | 05-Nov | 21-Nov | 182 | 212.1 | 210.0 | 261 | 1985-2020 | 9 |
| SALTAIR | 17-Mar | 15-Apr | 14-Apr | 02-Jun | 20-Sep | 24-Oct | 24-Oct | 17-Nov | 137 | 190.5 | 188.0 | 238 | 1903-1942 | 21 |
| SALTAIR SALT PLT | 06-Mar | 30-Apr | 30-Apr | 01-Jun | 17-Sep | 15-Oct | 14-Oct | 17-Nov | 130 | 168.9 | 166.0 | 237 | 1956-1991 | 19 |
| SANDY RCH | 21-Apr | 11-May | 10-May | 20-Jun | 03-Sep | 24-Sep | 25-Sep | 14-Oct | 75 | 134.8 | 136.0 | 166 | 1964-1988 | 9 |
| SANTAQUIN CHLORINATOR | 06-Apr | 15-May | 13-May | 17-Jun | 09-Sep | 05-Oct | 05-Oct | 05-Nov | 96 | 145.1 | 143.0 | 184 | 1914-2024 | 96 |
| SCIPIO | 28-Apr | 07-Jun | 05-Jun | 20-Jul | 13-Aug | 15-Sep | 15-Sep | 18-Oct | 24 | 101.0 | 101.0 | 147 | 1895-2024 | 113 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: RA - SC
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| SCOFIELD | 18-Jun | 09-Jul | 10-Jul | 24-Jul | 27-Jul | 11-Aug | 09-Aug | 11-Sep | 7 | 34.0 | 30.5 | 71 | 1893-1984 | 24 |
| SCOFIELD DAM | 24-May | 23-Jun | 22-Jun | 23-Jul | 06-Aug | 05-Sep | 10-Sep | 04-Oct | 29 | 75.1 | 79.5 | 109 | 1948-2024 | 48 |
| SCOFIELD-SKYLINE MINE | 18-May | 19-Jun | 18-Jun | 23-Jul | 08-Aug | 12-Sep | 14-Sep | 19-Oct | 38 | 85.9 | 86.0 | 149 | 1984-2024 | 38 |
| Seeley Creek | 11-May | 14-Jun | 13-Jun | 04-Jul | 24-Aug | 17-Sep | 18-Sep | 20-Oct | 59 | 96.4 | 97.0 | 149 | 1980-2024 | 34 |
| SEVERE RCH | 26-Jun | 26-Jun | 26-Jun | 26-Jun | 31-Jul | 31-Jul | 31-Jul | 31-Jul | 35 | 35.0 | 35.0 | 35 | 1950-1951 | 1 |
| SEVIER BRIDGE DAM | 05-May | 28-May | 30-May | 20-Jun | 31-Aug | 15-Sep | 15-Sep | 05-Oct | 85 | 108.9 | 112.0 | 131 | 1922-1932 | 7 |
| SEVIER DRY LAKE | 26-May | 03-Jun | 01-Jun | 13-Jun | 14-Aug | 09-Sep | 09-Sep | 05-Oct | 62 | 97.0 | 97.0 | 132 | 1988-1993 | 2 |
| SEVIER RESERVOIR - SCIPIO 9NNE | 17-Apr | 06-May | 05-May | 01-Jun | 17-Sep | 09-Oct | 09-Oct | 30-Oct | 111 | 157.1 | 157.0 | 194 | 1988-2024 | 35 |
| SHIFTING SANDS RCH | 19-Mar | 13-Apr | 11-Apr | 12-May | 08-Oct | 18-Oct | 18-Oct | 28-Oct | 169 | 181.3 | 172.0 | 203 | 1989-1992 | 3 |
| SIGNAL PEAK - MONROE 5E UTAH | 27-Apr | 31-May | 31-May | 25-Jun | 04-Sep | 28-Sep | 30-Sep | 29-Oct | 86 | 120.8 | 119.0 | 159 | 1983-2024 | 41 |
| SIGURD U P & L | 03-May | 17-May | 13-May | 08-Jun | 12-Sep | 26-Sep | 26-Sep | 15-Oct | 96 | 132.3 | 133.0 | 165 | 1980-1995 | 13 |
| SILVER LAKE BRIGHTON | 29-May | 28-Jun | 27-Jun | 23-Jul | 26-Jul | 29-Aug | 31-Aug | 23-Sep | 9 | 61.9 | 63.0 | 99 | 1915-2024 | 83 |
| SINGLETREE | 04-Jun | 06-Jun | 06-Jun | 08-Jun | 08-Sep | 19-Sep | 20-Sep | 01-Oct | 92 | 105.5 | 105.5 | 119 | 1893-1894 | 2 |
| Smith & Morehouse | 08-May | 12-Jun | 15-Jun | 05-Jul | 31-Jul | 15-Sep | 16-Sep | 23-Oct | 39 | 95.5 | 93.0 | 160 | 1979-2024 | 32 |
| SMITHFIELD | 03-May | 17-May | 09-May | 03-Jun | 12-Sep | 19-Sep | 22-Sep | 29-Sep | 107 | 126.0 | 132.0 | 137 | 1925-1930 | 5 |
| SNAKE CREEK POWERHOUSE | 14-May | 14-Jun | 14-Jun | 07-Jul | 29-Jul | 09-Sep | 11-Sep | 14-Oct | 35 | 87.8 | 88.0 | 140 | 1914-2024 | 95 |
| Snowbird | 07-May | 07-Jun | 09-Jun | 03-Jul | 01-Sep | 25-Sep | 24-Sep | 27-Oct | 81 | 111.4 | 109.5 | 164 | 1990-2024 | 30 |
| SNOWBIRD | 15-Aug | 15-Aug | 15-Aug | 15-Aug | 1977-1979 | 0* | ||||||||
| SNOWVILLE | 26-Apr | 10-Jun | 11-Jun | 10-Jul | 28-Jul | 12-Sep | 13-Sep | 03-Nov | 22 | 94.4 | 96.0 | 145 | 1893-1991 | 68 |
| SNYDERVILLE | 22-Jun | 04-Jul | 07-Jul | 13-Jul | 30-Jul | 17-Aug | 17-Aug | 04-Sep | 38 | 46.5 | 44.5 | 59 | 1993-2024 | 4 |
| SOLDIER CREEK | 09-Jul | 17-Jul | 16-Jul | 24-Jul | 28-Jul | 31-Jul | 30-Jul | 09-Aug | 9 | 15.3 | 16.5 | 19 | 1969-1973 | 4 |
| SOLDIER SUMMIT | 27-May | 03-Jul | 03-Jul | 23-Jul | 26-Jul | 24-Aug | 27-Aug | 09-Oct | 9 | 53.5 | 54.0 | 97 | 1893-2002 | 56 |
| SPANISH FK PWR HOUSE | 25-Mar | 01-May | 01-May | 14-Jun | 05-Sep | 14-Oct | 15-Oct | 17-Nov | 116 | 167.0 | 164.0 | 230 | 1909-2024 | 110 |
| SPANISH FORK 1 S | 15-Apr | 07-May | 11-May | 20-May | 21-Sep | 02-Oct | 01-Oct | 22-Oct | 125 | 148.7 | 146.0 | 183 | 1950-1959 | 9 |
| SPANISH VALLEY 25 SW | 15-Apr | 17-Apr | 17-Apr | 19-Apr | 25-Oct | 29-Oct | 30-Oct | 03-Nov | 193 | 195.5 | 195.5 | 198 | 2012-2014 | 2 |
| Spirit Lk | 08-Jun | 27-Jun | 27-Jun | 12-Jul | 28-Jul | 28-Aug | 28-Aug | 18-Sep | 31 | 63.1 | 63.0 | 87 | 2010-2024 | 15 |
| Squaw Springs | 12-May | 31-May | 25-May | 23-Jun | 08-Sep | 01-Oct | 01-Oct | 22-Oct | 82 | 123.8 | 122.5 | 151 | 2011-2024 | 12 |
| ST GEORGE | 09-Feb | 01-Apr | 30-Mar | 20-May | 21-Sep | 29-Oct | 01-Nov | 25-Nov | 135 | 210.5 | 215.0 | 283 | 1893-2024 | 101 |
| ST GEORGE CAA AP | 16-Mar | 27-Mar | 25-Mar | 12-Apr | 21-Oct | 04-Nov | 05-Nov | 18-Nov | 205 | 222.7 | 224.0 | 239 | 1948-1954 | 6 |
| ST. GEORGE 15 NE | 23-Feb | 01-Mar | 01-Mar | 07-Mar | 03-Dec | 03-Dec | 03-Dec | 03-Dec | 283 | 283.0 | 283.0 | 283 | 2011-2012 | 1 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: SC - ST
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| ST. JOHN | 27-Apr | 12-Jun | 14-Jun | 19-Jul | 22-Aug | 08-Sep | 09-Sep | 20-Sep | 42 | 88.3 | 88.0 | 136 | 1911-1929 | 13 |
| STANDROD | 15-May | 06-Jun | 05-Jun | 22-Jun | 05-Sep | 23-Sep | 22-Sep | 19-Oct | 81 | 107.2 | 112.0 | 144 | 1910-1942 | 9 |
| Steel Creek Park | 29-May | 28-Jun | 21-Jun | 24-Jul | 27-Jul | 29-Aug | 02-Sep | 06-Oct | 3 | 63.3 | 63.0 | 112 | 1979-2024 | 34 |
| Strawberry Divide | 03-May | 03-Jun | 02-Jun | 01-Jul | 26-Aug | 26-Sep | 25-Sep | 27-Oct | 81 | 117.2 | 113.5 | 164 | 1979-2024 | 30 |
| STRAWBERRY HWY STN | 17-Jul | 17-Jul | 17-Jul | 17-Jul | 02-Aug | 17-Aug | 18-Aug | 02-Sep | 47 | 47.0 | 47.0 | 47 | 1954-1984 | 1 |
| STRAWBERRY HWY STN | 27-Jun | 13-Jul | 16-Jul | 20-Jul | 25-Jul | 07-Aug | 07-Aug | 21-Aug | 10 | 25.8 | 19.0 | 55 | 1962-1968 | 4 |
| STRAWBERRY RSVR EAST P | 31-May | 04-Jul | 04-Jul | 23-Jul | 25-Jul | 18-Aug | 24-Aug | 13-Sep | 8 | 46.0 | 51.0 | 105 | 1956-1977 | 19 |
| STRAWBERRY TUNNEL WEST | 09-Jun | 24-Jun | 23-Jun | 09-Jul | 25-Aug | 06-Sep | 06-Sep | 20-Sep | 59 | 74.8 | 78.5 | 83 | 1909-1913 | 4 |
| SUNDANCE | 13-May | 31-May | 26-May | 22-Jun | 13-Sep | 26-Sep | 27-Sep | 10-Oct | 104 | 119.6 | 117.5 | 135 | 1996-2008 | 10 |
| Sunflower Flat | 04-May | 24-May | 24-May | 09-Jun | 08-Sep | 03-Oct | 30-Sep | 23-Oct | 91 | 132.3 | 129.0 | 155 | 2014-2024 | 11 |
| SUNNYSIDE | 22-Apr | 25-May | 25-May | 03-Jul | 03-Sep | 03-Oct | 03-Oct | 30-Oct | 77 | 132.8 | 134.0 | 176 | 1905-1988 | 28 |
| SUNNYSIDE CITY | 13-Apr | 03-May | 02-May | 22-Jun | 09-Sep | 13-Oct | 15-Oct | 01-Nov | 110 | 165.4 | 172.0 | 195 | 2009-2024 | 11 |
| SUNNYSIDE CITY CTR | 30-Apr | 22-May | 23-May | 14-Jun | 13-Sep | 02-Oct | 04-Oct | 24-Oct | 104 | 133.6 | 133.0 | 168 | 1989-2008 | 17 |
| Suu Ranch | 11-May | 09-Jun | 13-Jun | 30-Jun | 09-Sep | 29-Sep | 01-Oct | 23-Oct | 71 | 113.5 | 111.0 | 157 | 2014-2024 | 11 |
| TABIONA 1 SE | 12-Jun | 28-Jun | 04-Jul | 06-Jul | 12-Sep | 12-Sep | 12-Sep | 12-Sep | 68 | 68.0 | 68.0 | 68 | 1982-1985 | 1 |
| Takka Wiiya | 19-May | 03-Jun | 03-Jun | 18-Jun | 29-Sep | 29-Sep | 29-Sep | 29-Sep | 103 | 103.0 | 103.0 | 103 | 2014-2015 | 1 |
| TEASDALE | 27-Apr | 27-May | 27-May | 15-Jun | 05-Sep | 19-Sep | 19-Sep | 19-Oct | 92 | 115.3 | 112.5 | 151 | 1895-1920 | 12 |
| TELEGRAPH FLAT - KANAB 17E UTA | 11-Apr | 14-May | 14-May | 18-Jun | 10-Sep | 10-Oct | 09-Oct | 01-Nov | 93 | 149.4 | 149.0 | 194 | 1988-2024 | 35 |
| Temple Fork | 07-May | 27-May | 23-May | 18-Jun | 12-Sep | 07-Oct | 05-Oct | 27-Oct | 86 | 133.1 | 129.0 | 172 | 2002-2024 | 9 |
| TERRACE | 11-May | 24-May | 25-May | 03-Jun | 10-Sep | 13-Sep | 14-Sep | 17-Sep | 106 | 107.0 | 107.0 | 108 | 1899-1904 | 2 |
| Thaynes Canyon | 11-May | 09-Jun | 10-Jun | 01-Jul | 24-Aug | 19-Sep | 20-Sep | 27-Oct | 62 | 103.4 | 103.5 | 164 | 1988-2024 | 32 |
| THIOKOL PROPULSION F S | 01-May | 26-May | 20-May | 30-Jun | 26-Aug | 21-Sep | 20-Sep | 19-Oct | 72 | 120.4 | 120.5 | 158 | 1962-2009 | 42 |
| THISTLE | 01-Apr | 07-Jun | 14-Jun | 10-Jul | 13-Aug | 07-Sep | 02-Sep | 24-Oct | 36 | 95.8 | 88.0 | 202 | 1894-1913 | 13 |
| THISTLE 2 SW | 16-Jun | 03-Jul | 02-Jul | 21-Jul | 29-Jul | 04-Aug | 02-Aug | 15-Aug | 22 | 32.4 | 31.0 | 45 | 1975-1979 | 5 |
| THISTLE 3 N | 24-May | 18-Jun | 19-Jun | 21-Jul | 30-Jul | 01-Sep | 05-Sep | 04-Oct | 32 | 74.5 | 76.0 | 116 | 1915-1947 | 22 |
| Thistle Flat | 07-May | 30-May | 23-May | 22-Jun | 08-Sep | 01-Oct | 01-Oct | 24-Oct | 91 | 124.4 | 124.5 | 154 | 2012-2024 | 12 |
| THOMPSON | 01-Apr | 27-Apr | 28-Apr | 25-May | 15-Sep | 19-Oct | 20-Oct | 15-Nov | 135 | 175.9 | 177.0 | 208 | 1911-2024 | 51 |
| Timberline | 27-May | 12-Jun | 11-Jun | 01-Jul | 08-Sep | 19-Sep | 20-Sep | 06-Oct | 69 | 100.0 | 101.0 | 119 | 2008-2024 | 17 |
| TIMPANOGOS CAVE | 03-Apr | 12-May | 11-May | 03-Jul | 25-Aug | 09-Oct | 08-Oct | 12-Nov | 53 | 150.5 | 151.0 | 205 | 1947-2020 | 57 |
| Timpanogos Divide | 03-May | 29-May | 30-May | 18-Jun | 06-Sep | 01-Oct | 02-Oct | 27-Oct | 99 | 125.9 | 122.0 | 164 | 1979-2024 | 15 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: ST - TO
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| TOM BEST SPRING UTAH | 19-May | 12-Jun | 12-Jun | 30-Jun | 31-Aug | 16-Sep | 16-Sep | 07-Oct | 66 | 96.6 | 95.0 | 138 | 1998-2024 | 26 |
| Tony Grove Lake | 08-May | 05-Jun | 09-Jun | 18-Jun | 06-Sep | 26-Sep | 25-Sep | 22-Oct | 81 | 114.7 | 114.0 | 140 | 1979-2024 | 18 |
| Tony Grove RS | 11-May | 09-Jun | 15-Jun | 22-Jun | 28-Jul | 12-Sep | 15-Sep | 12-Oct | 73 | 98.5 | 98.0 | 135 | 2009-2024 | 15 |
| TOOELE | 15-Mar | 07-May | 06-May | 03-Jul | 13-Sep | 15-Oct | 17-Oct | 08-Nov | 106 | 162.3 | 163.0 | 234 | 1896-2024 | 127 |
| TOPAZ | 04-May | 12-May | 11-May | 19-May | 03-Oct | 08-Oct | 08-Oct | 13-Oct | 147 | 149.5 | 149.5 | 152 | 1943-1944 | 2 |
| TOQUERVILLE | 12-Apr | 12-Apr | 12-Apr | 12-Apr | 31-Oct | 31-Oct | 31-Oct | 31-Oct | 202 | 202.0 | 202.0 | 202 | 1941-1942 | 1 |
| TORREY 7 E | 12-Apr | 25-Apr | 25-Apr | 08-May | 03-Oct | 19-Oct | 23-Oct | 05-Nov | 156 | 178.0 | 180.0 | 203 | 2008-2024 | 17 |
| TREMONTON | 20-Mar | 05-May | 04-May | 11-Jun | 10-Sep | 07-Oct | 07-Oct | 31-Oct | 108 | 156.8 | 154.0 | 209 | 1914-2010 | 39 |
| TRENTON | 27-Apr | 26-May | 30-May | 30-Jun | 02-Aug | 20-Sep | 20-Sep | 28-Oct | 57 | 118.0 | 119.0 | 176 | 1944-2024 | 37 |
| Trial Lake | 31-May | 24-Jun | 20-Jun | 24-Jul | 25-Jul | 30-Aug | 05-Sep | 04-Oct | 1† | 69.4 | 77.0 | 107 | 1979-2024 | 35 |
| TROPIC | 27-Apr | 02-Jun | 31-May | 24-Jul | 25-Jul | 23-Sep | 24-Sep | 22-Oct | 1† | 114.0 | 117.0 | 172 | 1893-1999 | 77 |
| TROPIC 9 SE | 04-May | 23-May | 27-May | 03-Jun | 28-Sep | 14-Oct | 16-Oct | 26-Oct | 126 | 144.0 | 148.0 | 154 | 2009-2014 | 4 |
| Trout Creek | 27-May | 25-Jun | 22-Jun | 24-Jul | 25-Jul | 28-Aug | 01-Sep | 20-Sep | 1† | 64.7 | 65.0 | 108 | 1979-2024 | 33 |
| TULE VALLEY - DELTA 49W UTAH | 18-Mar | 24-Apr | 20-Apr | 01-Jun | 01-Oct | 24-Oct | 26-Oct | 16-Nov | 128 | 183.9 | 186.0 | 231 | 1988-2024 | 35 |
| UINTALANDS | 19-Jun | 04-Jul | 05-Jul | 19-Jul | 27-Jul | 25-Aug | 01-Sep | 21-Sep | 20 | 53.5 | 54.0 | 90 | 1978-1989 | 11 |
| UINTALANDS JACKSON | 25-Jun | 27-Jun | 27-Jun | 29-Jun | 25-Aug | 25-Aug | 25-Aug | 25-Aug | 61 | 61.0 | 61.0 | 61 | 1989-1991 | 1 |
| UNIV OF UTAH | 03-Apr | 03-May | 30-Apr | 06-Jun | 13-Sep | 21-Oct | 23-Oct | 19-Nov | 136 | 173.0 | 173.0 | 208 | 1914-1990 | 28 |
| Upper Joes Valley | 11-May | 08-Jun | 10-Jun | 30-Jun | 08-Sep | 21-Sep | 23-Sep | 07-Oct | 70 | 104.8 | 108.0 | 136 | 2012-2024 | 12 |
| UPPER P.R. CANYON UTAH | 03-May | 29-May | 29-May | 26-Jun | 26-Aug | 25-Sep | 24-Sep | 27-Oct | 85 | 120.5 | 119.0 | 158 | 1983-2024 | 41 |
| UPPER SAND WASH UTAH | 25-Apr | 22-May | 24-May | 17-Jun | 08-Sep | 29-Sep | 27-Sep | 27-Oct | 86 | 130.7 | 129.0 | 169 | 1984-2024 | 38 |
| Usu Doc Daniel | 09-May | 11-Jun | 17-Jun | 29-Jun | 31-Aug | 21-Sep | 22-Sep | 22-Oct | 70 | 103.5 | 105.0 | 137 | 2007-2024 | 17 |
| UTAH LAKE LEHI | 23-Mar | 14-May | 13-May | 30-Jun | 08-Sep | 30-Sep | 30-Sep | 17-Nov | 82 | 140.4 | 137.5 | 239 | 1904-2024 | 88 |
| UTAH TEST RANGE | 20-Apr | 17-May | 18-May | 18-Jun | 14-Sep | 04-Oct | 05-Oct | 27-Oct | 113 | 143.8 | 144.0 | 185 | 1991-2024 | 16 |
| VALLEY OF THE GODS | 16-Mar | 07-Apr | 07-Apr | 20-Apr | 11-Oct | 05-Nov | 06-Nov | 19-Nov | 193 | 211.9 | 207.0 | 232 | 2015-2024 | 8 |
| VERNAL | 20-Apr | 24-May | 21-May | 07-Jul | 27-Aug | 23-Sep | 23-Sep | 28-Oct | 62 | 122.3 | 122.0 | 190 | 1895-2024 | 102 |
| VERNAL 23 SSE | 28-Apr | 01-May | 30-Apr | 03-May | 28-Sep | 01-Oct | 01-Oct | 04-Oct | 148 | 153.5 | 153.5 | 159 | 2012-2014 | 2 |
| VERNAL MUNICIPAL AP | 16-Apr | 25-May | 21-May | 07-Jul | 27-Aug | 24-Sep | 23-Sep | 28-Oct | 62 | 123.6 | 124.0 | 195 | 1895-2024 | 108 |
| VERNON | 05-May | 31-May | 30-May | 30-Jun | 20-Aug | 21-Sep | 22-Sep | 27-Oct | 72 | 113.6 | 115.0 | 164 | 1954-2024 | 49 |
| VERNON - VERNON 10N UTAH | 02-May | 29-May | 27-May | 18-Jun | 16-Aug | 24-Sep | 24-Sep | 27-Oct | 81 | 118.6 | 118.0 | 164 | 1991-2024 | 34 |
| Vernon Creek | 26-Apr | 30-May | 03-Jun | 18-Jun | 02-Sep | 01-Oct | 01-Oct | 27-Oct | 82 | 125.2 | 124.0 | 184 | 1979-2024 | 23 |
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: TO - VE
▲
| Station Name | Last spring freeze | First fall freeze | Freeze-free | Period | Years | |||||||||
| Early | Avg | Median | Late | Early | Avg | Median | Late | Short | Avg | Median | Long | |||
| VEYO PWR HOUSE | 03-Mar | 28-Apr | 27-Apr | 14-Jun | 14-Sep | 21-Oct | 24-Oct | 21-Nov | 106 | 177.1 | 181.0 | 242 | 1958-2017 | 42 |
| WAH WAH RCH | 05-May | 29-May | 26-May | 01-Jul | 01-Aug | 24-Sep | 24-Sep | 21-Oct | 73 | 118.5 | 121.0 | 153 | 1956-2008 | 45 |
| WANSHIP DAM | 14-May | 16-Jun | 18-Jun | 08-Jul | 26-Jul | 04-Sep | 07-Sep | 29-Sep | 28 | 81.3 | 83.0 | 130 | 1956-2024 | 66 |
| WATSON NEAR | 04-May | 26-May | 28-May | 03-Jul | 30-Aug | 24-Sep | 25-Sep | 14-Oct | 89 | 121.3 | 118.0 | 163 | 1911-1928 | 17 |
| WEBER BASIN PUMP PLT 3 | 31-Mar | 07-May | 04-May | 18-Jun | 21-Sep | 15-Oct | 15-Oct | 08-Nov | 124 | 164.6 | 163.0 | 199 | 1962-2024 | 13 |
| Webster Flat | 29-Apr | 30-May | 29-May | 20-Jun | 16-Sep | 04-Oct | 02-Oct | 30-Oct | 101 | 125.8 | 124.0 | 159 | 1980-2024 | 18 |
| WELLINGTON | 14-May | 06-Jun | 06-Jun | 06-Jul | 20-Aug | 08-Sep | 12-Sep | 22-Sep | 74 | 97.9 | 97.0 | 127 | 1900-1942 | 7 |
| WELLINGTON 3 E | 09-May | 29-May | 29-May | 13-Jun | 07-Sep | 22-Sep | 22-Sep | 11-Oct | 94 | 117.0 | 119.0 | 138 | 1980-2024 | 16 |
| WENDOVER 1SSW | 05-Apr | 25-Apr | 14-Apr | 03-Jun | 10-Oct | 31-Oct | 02-Nov | 17-Nov | 167 | 189.5 | 192.5 | 206 | 2014-2018 | 4 |
| WENDOVER AP AWOS | 13-Mar | 19-Apr | 20-Apr | 09-Jun | 11-Sep | 22-Oct | 23-Oct | 11-Nov | 127 | 186.1 | 187.5 | 237 | 1911-2017 | 90 |
| WENDOVER DARBY AFB | 27-Mar | 29-Mar | 28-Mar | 30-Mar | 19-Oct | 19-Oct | 19-Oct | 19-Oct | 203 | 203.0 | 203.0 | 203 | 1949-1957 | 1 |
| WEST DESERT PUMP STN | 29-May | 29-May | 29-May | 29-May | 04-Nov | 04-Nov | 04-Nov | 04-Nov | 159 | 159.0 | 159.0 | 159 | 1988-1989 | 1 |
| WHEELER FARM | 27-Apr | 17-May | 20-May | 30-May | 27-Sep | 29-Sep | 27-Sep | 05-Oct | 126 | 140.0 | 133.0 | 161 | 1996-2000 | 3 |
| White River #1 | 07-May | 06-Jun | 10-Jun | 20-Jun | 27-Aug | 21-Sep | 19-Sep | 22-Oct | 77 | 109.2 | 114.0 | 139 | 1979-2024 | 18 |
| Widtsoe #3 | 07-May | 01-Jun | 03-Jun | 18-Jun | 16-Sep | 01-Oct | 30-Sep | 23-Oct | 102 | 123.5 | 122.5 | 152 | 1979-2024 | 18 |
| WIDTSOE 3 NNE | 27-May | 09-Jun | 06-Jun | 03-Jul | 30-Aug | 16-Sep | 13-Sep | 16-Oct | 75 | 100.4 | 95.0 | 132 | 1912-2005 | 14 |
| WILLIAMS RCH | 31-May | 17-Jun | 17-Jun | 03-Jul | 11-Aug | 21-Aug | 19-Aug | 04-Sep | 39 | 65.0 | 62.5 | 96 | 1960-1968 | 4 |
| WOODRUFF | 12-May | 26-Jun | 25-Jun | 24-Jul | 25-Jul | 20-Aug | 25-Aug | 22-Sep | 1† | 56.8 | 59.0 | 120 | 1897-2024 | 114 |
| WOODSIDE | 16-Apr | 11-May | 14-May | 29-May | 14-Sep | 27-Sep | 28-Sep | 14-Oct | 123 | 140.2 | 128.0 | 181 | 1911-1958 | 5 |
| Wrigley Creek | 16-May | 10-Jun | 13-Jun | 30-Jun | 08-Sep | 23-Sep | 22-Sep | 07-Oct | 70 | 104.9 | 104.0 | 142 | 2012-2024 | 12 |
| Yankee Reservoir | 03-May | 29-May | 25-May | 22-Jun | 08-Sep | 01-Oct | 30-Sep | 23-Oct | 90 | 125.8 | 125.0 | 157 | 2012-2024 | 12 |
| YELLOW PINE | 16-Jun | 16-Jun | 16-Jun | 16-Jun | 09-Sep | 13-Sep | 14-Sep | 18-Sep | 94 | 94.0 | 94.0 | 94 | 1917-1919 | 1 |
| ZION NP | 05-Mar | 15-Apr | 17-Apr | 18-May | 03-Oct | 30-Oct | 30-Oct | 24-Nov | 160 | 198.7 | 197.0 | 242 | 1904-2024 | 102 |
| ZION PARK LODGE | 22-May | 22-May | 22-May | 22-May | 14-Nov | 14-Nov | 14-Nov | 14-Nov | 1928-1930 | 0* | ||||
| *Stations with 0 years include at least one good spring or fall season | ||||||||||||||
| †Freeze-Free seasons with 1 day could be frozen all year; 729 or 730 days represent years that could have been "Freeze-Free" all year (730 would indicate a leap year) | ||||||||||||||
Results: VE - ZI
▲