Frost dates in Musselshell 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 Musselshell County falls May 10 to May 20 and the average first fall frost Sep 21 to Sep 29, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b. Places: Klein, Musselshell. 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
59059	Musselshell	May 10	Sep 29	4b
59072	Klein	May 20	Sep 21	4b

Nearby counties

Golden Valley County Yellowstone County Petroleum County Treasure County Fergus County Wheatland County

All Montana counties · Download Montana frost dates (CSV)

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