Powell County Climate
Powell County, Montana
Avg Annual Temp
39.8°F
Annual Precip
15.2"
Annual Snowfall
—
Extreme Heat Days
9.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Powell County Weather
Colder Than the National Average
A 39.8°F average temperature puts Powell County nearly 15 degrees below the national median. This is a cold, high-elevation climate typical of the continental divide.
Among Montana's Coldest Counties
Powell is significantly colder than the 43.7°F Montana average. It ranks as one of the state's chilliest jurisdictions.
A Cooler Mountain Landscape
While specific snowfall data is unavailable, the 15.2 inches of precipitation matches the state average. July temperatures are much lower at 62.1°F than the nearby eastern plains.
Short, Mild Summers
Summer heat is rare with only 10 days hitting 90°F and a seasonal average of 59.2°F. Winters are cold, averaging 21.1°F with January lows dipping to 20.8°F.
Insulating for Sub-40 Temps
High-performance home insulation is vital for the sub-40°F annual average. Cooling needs are minimal, as the 62.1°F July average is naturally refreshing.
Frequently Asked Questions
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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.