Frost dates in Grand County, Colorado
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The average last spring frost in Grand County falls May 30 to Jun 14 and the average first fall frost Sep 5 to Sep 19, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a to 5b. Places: Fraser, Granby, Grand Lake, Hot Sulphur Springs, Kremmling, Parshall. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 80442 | Fraser | Jun 13 | Sep 7 | 5b |
| 80446 | Granby | Jun 13 | Sep 7 | 5a |
| 80447 | Grand Lake | Jun 13 | Sep 7 | 5a |
| 80451 | Hot Sulphur Springs | Jun 12 | Sep 10 | 5b |
| 80459 | Kremmling | Jun 14 | Sep 5 | 5a |
| 80468 | Parshall | Jun 12 | Sep 10 | 5a |
| 80478 | Tabernash | Jun 13 | Sep 7 | 5b |
| 80482 | Winter Park | May 30 | Sep 19 | 5a |
Nearby counties
Gilpin County Clear Creek County Summit County Boulder County Jackson County Eagle County
All Colorado counties · Download Colorado frost dates (CSV)
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