Frost dates by state
Utah Frost Dates
Across Utah's 255 cities and towns, the average last spring frost runs from March 14 in Ivins to June 21 in Parowan. Average last frost elsewhere: St. George Mar 14, Salt Lake City Mar 31 and Park City May 29. In 1 town, frost is possible in any month.
Frost dates for every city and town in Utah
Dates are for 32°F at the NOAA station nearest the ZIP code at each Utah town's center. "Safer date" is when only 1 year in 10 still gets a frost, a good target for tomatoes and peppers.
| City | Average last frost | Safer date | Average first frost | Frost-free days |
|---|---|---|---|---|
| Alpine | May 3 | May 26 | Oct 12 | 162 |
| Alta | Jun 11 | Jun 27 | Sep 18 | 99 |
| Altamont | May 31 | Jun 16 | Sep 23 | 115 |
| Alton | Jun 1 | Jun 15 | Sep 30 | 121 |
| Amalga | May 8 | May 29 | Oct 2 | 147 |
| American Fork | Apr 17 | May 7 | Oct 25 | 191 |
| Annabella | May 21 | Jun 7 | Sep 24 | 126 |
| Antimony | Jun 17 | Jul 3 | Sep 12 | 87 |
| Apple Valley | Apr 13 | May 2 | Nov 2 | 203 |
| Aurora | May 21 | Jun 7 | Sep 24 | 126 |
| Ballard | May 23 | Jun 9 | Sep 22 | 122 |
| Bear River City | Apr 24 | May 9 | Oct 17 | 176 |
| Beaver | Jun 1 | Jun 15 | Sep 28 | 119 |
| Bicknell | May 31 | Jun 14 | Sep 21 | 113 |
| Big Water | Apr 29 | May 18 | Oct 22 | 176 |
| Blanding | Apr 28 | May 16 | Oct 21 | 176 |
| Bluff | Apr 24 | May 9 | Oct 13 | 172 |
| Bluffdale | Apr 18 | May 6 | Oct 22 | 187 |
| Boulder | May 4 | May 25 | Oct 14 | 163 |
| Bountiful | Apr 24 | May 14 | Oct 19 | 178 |
| Brian Head | Jun 21 | Jul 6 | Sep 12 | 83 |
| Brigham City | May 5 | May 29 | Oct 5 | 153 |
| Brighton | Jun 11 | Jun 27 | Sep 18 | 99 |
| Bryce Canyon City | May 23 | Jun 9 | Sep 27 | 127 |
| Cannonville | May 31 | Jun 18 | Sep 28 | 120 |
| Castle Dale | May 18 | Jun 8 | Sep 27 | 132 |
| Castle Valley | Apr 11 | Apr 28 | Oct 23 | 195 |
| Cedar City | May 21 | Jun 8 | Sep 29 | 131 |
| Cedar Fort | Jun 2 | Jun 24 | Sep 16 | 106 |
| Cedar Hills | May 2 | May 26 | Oct 16 | 167 |
| Centerfield | May 31 | Jun 16 | Sep 21 | 113 |
| Centerville | Apr 25 | May 14 | Oct 24 | 182 |
| Central Valley | May 21 | Jun 7 | Sep 24 | 126 |
| Charleston | May 31 | Jun 23 | Sep 11 | 103 |
| Circleville | May 23 | Jun 13 | Sep 27 | 127 |
| Clarkston | May 3 | May 24 | Oct 12 | 162 |
| Clawson | May 6 | May 27 | Oct 10 | 157 |
| Clearfield | Apr 29 | May 25 | Oct 20 | 174 |
| Cleveland | May 18 | Jun 8 | Sep 27 | 132 |
| Clinton | Apr 22 | May 10 | Oct 22 | 183 |
| Coalville | May 30 | Jun 16 | Sep 18 | 111 |
| Copperton metro | Apr 3 | Apr 19 | Nov 4 | 215 |
| Corinne | May 5 | May 29 | Oct 5 | 153 |
| Cornish | May 17 | Jun 6 | Sep 18 | 124 |
| Cottonwood Heights | Apr 29 | May 30 | Oct 22 | 176 |
| Daniel | Jun 4 | Jun 21 | Sep 20 | 108 |
| Delta | May 16 | Jun 5 | Sep 29 | 136 |
| Deweyville | Apr 24 | May 9 | Oct 17 | 176 |
| Draper | Apr 18 | May 6 | Oct 22 | 187 |
| Duchesne | May 6 | May 26 | Oct 5 | 152 |
| Dutch John | May 19 | Jun 4 | Sep 28 | 132 |
| Eagle Mountain | Apr 30 | May 27 | Oct 9 | 162 |
| East Carbon | Apr 26 | May 18 | Oct 25 | 182 |
| Elk Ridge | Apr 25 | May 13 | Oct 18 | 176 |
| Elmo | May 18 | Jun 8 | Sep 27 | 132 |
| Elsinore | May 21 | Jun 7 | Sep 24 | 126 |
| Elwood | Apr 24 | May 9 | Oct 17 | 176 |
| Emery | May 29 | Jun 15 | Sep 26 | 120 |
| Emigration Canyon metro | May 7 | May 27 | Oct 14 | 160 |
| Enoch | May 21 | Jun 8 | Sep 29 | 131 |
| Enterprise | May 21 | Jun 7 | Oct 2 | 134 |
| Ephraim | May 28 | Jun 15 | Sep 20 | 115 |
| Erda | May 2 | May 28 | Oct 16 | 167 |
| Escalante | May 8 | May 24 | Oct 10 | 155 |
| Eureka | May 15 | Jun 5 | Oct 1 | 139 |
| Fairfield | Jun 2 | Jun 24 | Sep 16 | 106 |
| Fairview | May 26 | Jun 13 | Sep 25 | 122 |
| Farmington | Apr 19 | May 7 | Oct 19 | 183 |
| Farr West | Apr 21 | May 6 | Oct 23 | 185 |
| Fayette | May 31 | Jun 16 | Sep 21 | 113 |
| Ferron | May 6 | May 27 | Oct 10 | 157 |
| Fielding | May 3 | May 24 | Oct 12 | 162 |
| Fillmore | May 4 | May 26 | Oct 14 | 163 |
| Fountain Green | May 26 | Jun 13 | Sep 25 | 122 |
| Francis | Jun 4 | Jun 21 | Sep 20 | 108 |
| Fruit Heights | Apr 19 | May 7 | Oct 19 | 183 |
| Garden City | May 15 | Jun 5 | Oct 4 | 142 |
| Garland | Apr 24 | May 9 | Oct 17 | 176 |
| Genola | May 4 | May 28 | Oct 11 | 160 |
| Glendale | May 15 | Jun 4 | Oct 8 | 146 |
| Glenwood | May 21 | Jun 7 | Sep 24 | 126 |
| Goshen | May 4 | May 28 | Oct 11 | 160 |
| Grantsville | May 2 | May 28 | Oct 16 | 167 |
| Green River | Apr 22 | May 8 | Oct 20 | 181 |
| Gunnison | May 31 | Jun 16 | Sep 21 | 113 |
| Hanksville | May 5 | May 23 | Oct 3 | 151 |
| Harrisville | Apr 21 | May 6 | Oct 23 | 185 |
| Hatch | Jun 19 | Jul 2 | Sep 13 | 86 |
| Heber | Jun 4 | Jun 21 | Sep 20 | 108 |
| Helper | May 3 | May 21 | Oct 12 | 162 |
| Henefer | May 30 | Jun 16 | Sep 18 | 111 |
| Henrieville | May 31 | Jun 18 | Sep 28 | 120 |
| Herriman | Apr 18 | May 6 | Oct 22 | 187 |
| Hideout | May 29 | Jun 14 | Sep 25 | 119 |
| Highland | Apr 30 | May 27 | Oct 9 | 162 |
| Hildale | Apr 26 | May 15 | Oct 25 | 182 |
| Hinckley | May 16 | Jun 5 | Sep 29 | 136 |
| Holden | May 4 | May 26 | Oct 14 | 163 |
| Holladay | Apr 29 | May 30 | Oct 22 | 176 |
| Honeyville | Apr 24 | May 9 | Oct 17 | 176 |
| Hooper | Apr 22 | May 10 | Oct 22 | 183 |
| Howell | May 17 | Jun 8 | Sep 24 | 130 |
| Huntington | May 18 | Jun 8 | Sep 27 | 132 |
| Huntsville | May 25 | Jun 16 | Sep 26 | 124 |
| Hurricane | Apr 1 | Apr 24 | Nov 5 | 218 |
| Hyde Park | May 8 | May 29 | Oct 2 | 147 |
| Hyrum | May 12 | May 29 | Sep 28 | 139 |
| Independence | May 28 | Jun 15 | Sep 23 | 118 |
| Interlaken | May 31 | Jun 23 | Sep 11 | 103 |
| Ivins | Mar 14 | Apr 6 | Nov 10 | 241 |
| Joseph | Jun 4 | Jun 21 | Sep 21 | 109 |
| Junction | May 23 | Jun 13 | Sep 27 | 127 |
| Kamas | Jun 5 | Jun 23 | Sep 17 | 104 |
| Kanab | Apr 29 | May 18 | Oct 22 | 176 |
| Kanarraville | May 9 | May 29 | Oct 11 | 155 |
| Kanosh | Apr 30 | May 21 | Oct 19 | 172 |
| Kaysville | Apr 19 | May 7 | Oct 19 | 183 |
| Kearns metro | Apr 8 | Apr 30 | Oct 31 | 206 |
| Kingston | May 23 | Jun 13 | Sep 27 | 127 |
| Koosharem | Jun 6 | Jun 26 | Sep 21 | 107 |
| La Verkin | Apr 1 | Apr 24 | Nov 5 | 218 |
| Lake Point | Apr 3 | Apr 19 | Nov 4 | 215 |
| Laketown | May 15 | Jun 5 | Oct 4 | 142 |
| Layton | Apr 19 | May 7 | Oct 19 | 183 |
| Leamington | May 2 | May 21 | Oct 13 | 164 |
| Leeds | Apr 1 | Apr 24 | Nov 5 | 218 |
| Lehi | Apr 30 | May 27 | Oct 9 | 162 |
| Levan | May 10 | May 31 | Oct 7 | 150 |
| Lewiston | May 11 | Jun 2 | Oct 5 | 147 |
| Lindon | Apr 17 | May 7 | Oct 25 | 191 |
| Loa | May 31 | Jun 14 | Sep 21 | 113 |
| Logan | May 8 | Jun 2 | Oct 2 | 147 |
| Lyman | May 31 | Jun 14 | Sep 21 | 113 |
| Lynndyl | May 2 | May 21 | Oct 13 | 164 |
| Magna metro | Apr 3 | Apr 19 | Nov 4 | 215 |
| Manila | May 22 | Jun 11 | Sep 29 | 130 |
| Manti | May 11 | Jun 1 | Oct 6 | 148 |
| Mantua | May 5 | May 29 | Oct 5 | 153 |
| Mapleton | Apr 25 | May 13 | Oct 18 | 176 |
| Marriott-Slaterville | Apr 22 | May 9 | Oct 18 | 179 |
| Marysvale | May 24 | Jun 10 | Sep 25 | 124 |
| Mayfield | May 11 | Jun 1 | Oct 6 | 148 |
| Meadow | May 4 | May 26 | Oct 14 | 163 |
| Mendon | May 12 | May 29 | Sep 28 | 139 |
| Midvale | Apr 29 | May 30 | Oct 22 | 176 |
| Midway | May 31 | Jun 23 | Sep 11 | 103 |
| Milford | May 10 | Jun 1 | Oct 2 | 145 |
| Millcreek | Apr 25 | May 10 | Oct 18 | 176 |
| Millville | May 12 | May 29 | Sep 28 | 139 |
| Minersville | May 10 | Jun 1 | Oct 2 | 145 |
| Moab | Apr 11 | Apr 28 | Oct 23 | 195 |
| Mona | May 6 | May 24 | Oct 10 | 157 |
| Monroe | May 21 | Jun 7 | Sep 24 | 126 |
| Monticello | May 17 | Jun 4 | Oct 7 | 143 |
| Morgan | May 25 | Jun 13 | Sep 24 | 122 |
| Moroni | May 26 | Jun 13 | Sep 25 | 122 |
| Mount Pleasant | May 26 | Jun 13 | Sep 25 | 122 |
| Murray | Apr 29 | May 30 | Oct 22 | 176 |
| Myton | May 7 | May 25 | Oct 5 | 151 |
| Naples | May 15 | Jun 7 | Oct 5 | 143 |
| Nephi | May 6 | May 24 | Oct 10 | 157 |
| New Harmony | May 9 | May 29 | Oct 11 | 155 |
| Newton | May 3 | May 24 | Oct 12 | 162 |
| Nibley | May 12 | May 29 | Sep 28 | 139 |
| North Logan | Apr 30 | May 19 | Oct 16 | 169 |
| North Ogden | Apr 21 | May 6 | Oct 23 | 185 |
| North Salt Lake | Apr 24 | May 14 | Oct 19 | 178 |
| Oak City | May 2 | May 21 | Oct 13 | 164 |
| Oakley | Jun 11 | Jun 30 | Sep 12 | 93 |
| Ogden | Apr 22 | May 9 | Oct 18 | 179 |
| Orangeville | May 18 | Jun 8 | Sep 27 | 132 |
| Orderville | May 15 | Jun 4 | Oct 8 | 146 |
| Orem | Apr 19 | May 9 | Oct 19 | 183 |
| Panguitch | Jun 12 | Jun 27 | Sep 12 | 92 |
| Paradise | May 12 | May 29 | Sep 28 | 139 |
| Paragonah | Jun 21 | Jul 6 | Sep 12 | 83 |
| Park City | May 29 | Jun 14 | Sep 25 | 119 |
| Parowan | Jun 21 | Jul 6 | Sep 12 | 83 |
| Payson | Apr 25 | May 13 | Oct 18 | 176 |
| Perry | May 5 | May 29 | Oct 5 | 153 |
| Plain City | Apr 22 | May 9 | Oct 18 | 179 |
| Pleasant Grove | Apr 17 | May 7 | Oct 25 | 191 |
| Pleasant View | Apr 21 | May 6 | Oct 23 | 185 |
| Plymouth | May 3 | May 24 | Oct 12 | 162 |
| Portage | May 3 | May 24 | Oct 12 | 162 |
| Price | May 27 | Jun 11 | Sep 26 | 122 |
| Providence | Apr 30 | May 19 | Oct 16 | 169 |
| Provo | Apr 18 | May 5 | Oct 21 | 186 |
| Randolph | Jun 14 | Jun 30 | Sep 1 | 79 |
| Redmond | May 22 | Jun 10 | Sep 25 | 126 |
| Richfield | May 21 | Jun 7 | Sep 24 | 126 |
| Richmond | May 11 | Jun 2 | Oct 5 | 147 |
| River Heights | May 8 | Jun 2 | Oct 2 | 147 |
| Riverdale | Apr 22 | May 10 | Oct 22 | 183 |
| Riverton | Apr 18 | May 6 | Oct 22 | 187 |
| Rockville | Apr 13 | May 2 | Nov 2 | 203 |
| Rocky Ridge | May 4 | May 28 | Oct 11 | 160 |
| Roosevelt | May 23 | Jun 9 | Sep 22 | 122 |
| Roy | Apr 22 | May 10 | Oct 22 | 183 |
| Rush Valley | May 15 | Jun 4 | Oct 5 | 143 |
| Salem | Apr 25 | May 13 | Oct 18 | 176 |
| Salina | May 21 | Jun 7 | Sep 24 | 126 |
| Salt Lake City | Mar 31 | Apr 19 | Nov 8 | 222 |
| Sandy | Apr 29 | May 30 | Oct 22 | 176 |
| Santa Clara | Mar 14 | Apr 6 | Nov 10 | 241 |
| Santaquin | May 4 | May 28 | Oct 11 | 160 |
| Saratoga Springs | Apr 30 | May 27 | Oct 9 | 162 |
| Scipio | May 22 | Jun 10 | Sep 25 | 126 |
| Scofield | Jun 15 | Jul 1 | Sep 12 | 89 |
| Sigurd | May 21 | Jun 7 | Sep 24 | 126 |
| Smithfield | May 8 | May 29 | Oct 2 | 147 |
| Snowville | May 17 | Jun 8 | Sep 24 | 130 |
| South Jordan | Apr 18 | May 6 | Oct 22 | 187 |
| South Ogden | Apr 22 | May 10 | Oct 22 | 183 |
| South Salt Lake | Mar 31 | Apr 19 | Nov 8 | 222 |
| South Weber | Apr 22 | May 10 | Oct 22 | 183 |
| Spanish Fork | Apr 25 | May 13 | Oct 18 | 176 |
| Spring City | May 28 | Jun 15 | Sep 20 | 115 |
| Springdale | Apr 13 | May 2 | Nov 2 | 203 |
| Springville | Apr 18 | May 5 | Oct 21 | 186 |
| St. George | Mar 14 | Apr 6 | Nov 10 | 241 |
| Sterling | May 11 | Jun 1 | Oct 6 | 148 |
| Stockton | May 2 | May 28 | Oct 16 | 167 |
| Sunset | Apr 29 | May 25 | Oct 20 | 174 |
| Syracuse | Apr 19 | May 7 | Oct 19 | 183 |
| Tabiona | Jun 11 | Jun 24 | Sep 18 | 99 |
| Taylorsville | Apr 25 | May 10 | Oct 18 | 176 |
| Tooele | May 2 | May 28 | Oct 16 | 167 |
| Toquerville | Apr 1 | Apr 24 | Nov 5 | 218 |
| Torrey | May 31 | Jun 14 | Sep 21 | 113 |
| Tremonton | Apr 24 | May 9 | Oct 17 | 176 |
| Trenton | May 17 | Jun 6 | Sep 18 | 124 |
| Tropic | May 23 | Jun 9 | Sep 27 | 127 |
| Uintah | Apr 22 | May 10 | Oct 22 | 183 |
| Vernal | May 15 | Jun 7 | Oct 5 | 143 |
| Vernon | Jun 1 | Jun 19 | Sep 20 | 111 |
| Vineyard | Apr 19 | May 9 | Oct 19 | 183 |
| Virgin | Apr 1 | Apr 24 | Nov 5 | 218 |
| Wales | May 26 | Jun 13 | Sep 25 | 122 |
| Wallsburg | May 28 | Jun 15 | Sep 23 | 118 |
| Washington | Mar 14 | Apr 6 | Nov 10 | 241 |
| Washington Terrace | Apr 22 | May 10 | Oct 22 | 183 |
| Wellington | May 27 | Jun 11 | Sep 26 | 122 |
| Wellsville | May 12 | May 29 | Sep 28 | 139 |
| Wendover | Apr 18 | May 5 | Oct 23 | 188 |
| West Bountiful | Apr 24 | May 14 | Oct 19 | 178 |
| West Haven | Apr 22 | May 9 | Oct 18 | 179 |
| West Jordan | Apr 18 | May 6 | Oct 22 | 187 |
| West Point | Apr 22 | May 10 | Oct 22 | 183 |
| West Valley City | Apr 8 | Apr 30 | Oct 31 | 206 |
| White City metro | Apr 29 | May 30 | Oct 22 | 176 |
| Willard | Apr 22 | May 9 | Oct 18 | 179 |
| Woodland Hills | Apr 25 | May 13 | Oct 18 | 176 |
| Woodruff | Frost possible any month | |||
| Woods Cross | Apr 24 | May 14 | Oct 19 | 178 |
Source: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020. City centers from the US Census Bureau. Click a city for its nearest station and, where it has frost dates, hard-freeze dates and a vegetable planting calendar. See how we calculate.
Frequently asked questions
When is the last frost in St. George, UT?
The average last spring frost in St. George is March 14, and only 1 year in 10 has a frost after April 6. The average first fall frost is November 10. These come from NOAA's 1991–2020 records at the St George station.
When should I plant tomatoes in Utah?
UNH Extension times tomato transplants for 1 to 2 weeks after the average last frost. In St. George that's about Mar 21 to Mar 28; for a 9 in 10 chance of no later frost, wait until Apr 6. Look up your ZIP code for your own dates and a full vegetable planting calendar.
More for Utah: Utah climate zones (insulation) · Utah planting zones · Frost line depth by state