Frost dates in Prairie County, Montana
The average last spring frost in Prairie County falls May 12 to May 20 and the average first fall frost Sep 22 to Sep 28, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4a. Places: Fallon, Terry. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
Nearby counties
Custer County Dawson County Wibaux County Fallon County McCone County Richland County
All Montana counties · Download Montana frost dates (CSV)
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