Frost dates in Fallon County, Montana
The average last spring frost in Fallon County falls May 12 to May 21 and the average first fall frost Sep 20 to Sep 26, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4a to 4b. Places: Baker, Plevna. 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 |
|---|---|---|---|---|
| 59313 | Baker | May 16 | Sep 26 | 4b |
| 59344 | Plevna | May 21 | Sep 20 | 4a |
| 59354 | May 12 | Sep 26 | 4b |
Nearby counties
Custer County Wibaux County Prairie County Carter County Dawson County Powder River County
All Montana counties · Download Montana frost dates (CSV)
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