Beaverhead County Climate
Beaverhead County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
38.9°F
Annual Precip
12.1"
Annual Snowfall
35.1"
Extreme Heat Days
5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
1,035
Limited to cold-tolerant varieties
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Beaverhead County
Climate Verdict
Beaverhead County has a cold, with an average annual temperature of 38.9°F, arid conditions receiving just 12.1 inches of precipitation annually, rare extreme heat with only 5.1625 days above 90°F annually, moderate snowfall of 35.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 18.9°F. summers are pleasantly cool with July averaging 61.6°F. The 43°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Beaverhead County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Beaverhead County is 4.8°F cooler than the Montana statewide average of 43.7°F, it is somewhat drier than average for Montana, the county experiences 16.502045068027215 fewer extreme heat days than the state average.
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.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.