Frost dates in Alamosa County, Colorado
The average last spring frost in Alamosa County falls May 21 to May 30 and the average first fall frost Sep 17 to Oct 1, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b to 5a. Places: Alamosa, Hooper. 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 |
|---|---|---|---|---|
| 81101 | Alamosa | May 30 | Sep 17 | 4b |
| 81136 | Hooper | May 21 | Oct 1 | 5a |
| 81146 | May 21 | Oct 1 | 5a |
Nearby counties
Costilla County Conejos County Rio Grande County Saguache County Huerfano County Custer County
All Colorado counties · Download Colorado frost dates (CSV)
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