Beaverhead County Climate
Beaverhead County, Montana
Avg Annual Temp
38.9°F
Annual Precip
12.1"
Annual Snowfall
35.1"
Extreme Heat Days
5.1625
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Beaverhead County Weather
Beaverhead's Alpine Chill Below National Median
With an average annual temperature of 38.9°F, Beaverhead County sits significantly below the national median. This high-elevation climate reflects its rugged mountain character and cooler atmosphere.
Colder Than the Montana Average
The county's 38.9°F annual average is nearly 5 degrees colder than the state average of 43.7°F. This makes it one of the cooler regions within the Treasure State.
A Dry High-Altitude Neighbor
Recording just 12.1 inches of annual precipitation, Beaverhead is drier than the state average of 15.4 inches. It receives less moisture than many of its eastern neighbors, defining its semi-arid mountain landscape.
Cool Summers and Snowy Winters
July averages a mild 61.6°F while winters drop to a 19.4°F average. The county sees 35.1 inches of snow annually and only 5 days where temperatures hit 90°F.
Prioritize Winter Gear and Home Insulation
Residents should invest in heavy winter apparel and ensure homes are well-insulated for the long 18.9°F Januarys. Summer cooling needs are minimal given the low frequency of extreme heat.
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.