Frost dates in Missoula County, Montana
The average last spring frost in Missoula County falls May 6 to May 22 and the average first fall frost Sep 19 to Oct 4, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a to 6a. Places: Bonner-West Riverside, Condon, Evaro, Frenchtown, Huson, Lolo. 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 |
|---|---|---|---|---|
| 59801 | Missoula | May 10 | Oct 1 | 5b |
| 59802 | Missoula | May 10 | Oct 1 | 5b |
| 59803 | Missoula | May 10 | Oct 1 | 5b |
| 59804 | Orchard Homes | May 16 | Sep 26 | 5b |
| 59808 | Missoula | May 6 | Oct 4 | 5b |
| 59812 | Missoula | May 10 | Oct 1 | 5b |
| 59821 | Evaro | May 12 | Oct 2 | 5b |
| 59823 | Twin Creeks | May 10 | Oct 1 | 5b |
| 59826 | Condon | May 20 | Sep 22 | 5a |
| 59834 | Frenchtown | May 6 | Oct 4 | 6a |
| 59846 | Huson | May 18 | Sep 25 | 5b |
| 59847 | Lolo | May 22 | Sep 19 | 5b |
| 59851 | Bonner-West Riverside | May 10 | Oct 1 | 5b |
| 59868 | Seeley Lake | May 20 | Sep 22 | 5a |
Nearby counties
Granite County Lake County Ravalli County Mineral County Powell County Sanders County
All Montana counties · Download Montana frost dates (CSV)
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