Colorado Frost Dates
Across Colorado, the average last spring frost ranges from Apr 14 in Grand Junction to Jun 21 in Silverthorne. Find your town below, or enter your ZIP code for the nearest station.
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Average frost dates in Colorado towns
Average (50%) dates of the last 32°F frost in spring and the first in fall, from the nearest NOAA station. Towns with 5,000+ residents.
| Town | Last frost | First frost | Season (days) |
|---|---|---|---|
| Alamosa | May 30 | Sep 17 | 108 |
| Arvada | May 5 | Oct 5 | 151 |
| Aspen | Jun 2 | Sep 23 | 113 |
| Aurora | May 7 | Oct 8 | 152 |
| Avon | Jun 21 | Sep 7 | 77 |
| Berthoud | May 7 | Oct 5 | 151 |
| Boulder | May 6 | Oct 5 | 151 |
| Brighton | May 3 | Oct 7 | 155 |
| Broomfield | May 2 | Oct 11 | 160 |
| Brush | May 6 | Oct 6 | 153 |
| Carbondale | May 13 | Oct 3 | 142 |
| Castle Pines | May 9 | Oct 2 | 143 |
| Castle Rock | May 9 | Oct 2 | 143 |
| Cañon City | May 4 | Oct 7 | 153 |
| Centennial | May 5 | Oct 8 | 154 |
| Cherry Hills Village | May 7 | Oct 8 | 152 |
| Colorado Springs | May 3 | Oct 8 | 158 |
| Commerce City | May 3 | Oct 7 | 155 |
| Cortez | May 12 | Oct 7 | 147 |
| Craig | Jun 6 | Sep 12 | 96 |
| Dacono | May 7 | Oct 5 | 151 |
| Delta | May 1 | Oct 7 | 159 |
| Denver | May 4 | Oct 8 | 156 |
| Durango | May 21 | Oct 2 | 134 |
| Eagle | May 1 | Oct 14 | 164 |
| Eaton | May 2 | Oct 8 | 159 |
| Englewood | May 2 | Oct 11 | 160 |
| Erie | May 7 | Oct 5 | 151 |
| Estes Park | May 30 | Sep 17 | 109 |
| Evans | May 2 | Oct 8 | 159 |
| Federal Heights | May 2 | Oct 11 | 160 |
| Firestone | May 7 | Oct 5 | 151 |
| Fort Collins | May 2 | Oct 7 | 157 |
| Fort Lupton | May 3 | Oct 7 | 155 |
| Fort Morgan | May 6 | Oct 6 | 153 |
| Fountain | May 3 | Oct 8 | 158 |
| Frederick | May 7 | Oct 5 | 151 |
| Fruita | Apr 27 | Oct 11 | 164 |
| Glenwood Springs | May 13 | Oct 3 | 142 |
| Golden | May 3 | Oct 7 | 155 |
| Grand Junction | Apr 14 | Oct 23 | 190 |
| Greeley | May 2 | Oct 8 | 159 |
| Greenwood Village | May 7 | Oct 8 | 152 |
| Gunnison | Jun 21 | Sep 5 | 74 |
| Gypsum | May 1 | Oct 14 | 164 |
| Johnstown | May 10 | Oct 1 | 142 |
| La Junta | Apr 26 | Oct 15 | 171 |
| Lafayette | May 2 | Oct 11 | 160 |
| Lakewood | May 3 | Oct 7 | 155 |
| Lamar | Apr 30 | Oct 10 | 163 |
| Littleton | May 2 | Oct 11 | 160 |
| Lochbuie | May 3 | Oct 7 | 155 |
| Lone Tree | May 5 | Oct 8 | 154 |
| Longmont | May 7 | Oct 5 | 151 |
| Louisville | May 6 | Oct 5 | 151 |
| Loveland | May 10 | Oct 1 | 142 |
| Mead | May 7 | Oct 5 | 151 |
| Milliken | May 2 | Oct 8 | 159 |
| Montrose | Apr 28 | Oct 14 | 167 |
| Monument | May 17 | Oct 1 | 136 |
| Northglenn | May 2 | Oct 11 | 160 |
| Parker | May 9 | Oct 3 | 145 |
| Pueblo | Apr 30 | Oct 9 | 162 |
| Rifle | May 11 | Oct 4 | 143 |
| Salida | May 29 | Sep 20 | 112 |
| Severance | May 3 | Oct 6 | 154 |
| Sheridan | May 2 | Oct 11 | 160 |
| Silverthorne | Jun 21 | Sep 7 | 77 |
| Steamboat Springs | Jun 9 | Sep 12 | 93 |
| Sterling | Apr 30 | Oct 9 | 161 |
| Superior | May 6 | Oct 5 | 151 |
| Thornton | May 2 | Oct 11 | 160 |
| Timnath | May 3 | Oct 6 | 154 |
| Trinidad | Apr 30 | Oct 15 | 167 |
| Wellington | May 3 | Oct 6 | 154 |
| Westminster | May 2 | Oct 11 | 160 |
| Wheat Ridge | May 5 | Oct 5 | 151 |
| Windsor | May 3 | Oct 6 | 154 |
| Woodland Park | Jun 1 | Sep 21 | 110 |