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Frost dates in Beaverhead County, Montana

Autumn-colored mountain valley under cloudy peaks in Glacier National Park, Montana
Photo: TerryDOtt, CC BY 2.0, via Wikimedia Commons

The average last spring frost in Beaverhead County falls May 17 to Jun 11 and the average first fall frost Sep 7 to Sep 24, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b to 5a. Places: Butte-Silver Bow (balance), Dell, Dillon, Glen, Jackson, Lakeview. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.

ZIPPlaceLast spring frostFirst fall frostZone
59724DellJun 11Sep 105a
59725DillonJun 5Sep 135a
59732GlenJun 10Sep 74b
59736JacksonMay 17Sep 245a
59739LakeviewJun 11Sep 105a
59743Butte-Silver Bow (balance)Jun 10Sep 75a
59746Maverick MountainJun 5Sep 135a
59761WisdomJun 1Sep 175a

Nearby counties

Silver Bow County Madison County Deer Lodge County Jefferson County Gallatin County Ravalli County

All Montana counties · Download Montana frost dates (CSV)