Glacier County Climate
Glacier County, Montana
Avg Annual Temp
39.9°F
Annual Precip
20.1"
Annual Snowfall
—
Extreme Heat Days
4.959999999999999
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Glacier County Weather
One of the nation's coldest northern outposts
Glacier County is significantly colder than the national average, posting a brisk annual mean of 39.9°F. Its 20.1 inches of annual precipitation provides more moisture than many of its eastern Montana neighbors.
Well below the Montana temperature average
At 39.9°F, Glacier County sits nearly four degrees cooler than the Montana state average of 43.7°F. It represents the colder, high-latitude bracket of the state's climate profile.
Chillier than its southern and eastern peers
Glacier County is notably colder than Hill County (42.1°F) and Lake County (45.9°F). It experiences much shorter growing seasons than most surrounding regions.
Mild summers and steady winter cold
Extreme heat is rare here, with only 5 days a year topping 90°F and a July average of 61.5°F. While specific annual snowfall data is limited, winter temperatures consistently hover near a 22.2°F average.
Focus on high-efficiency heating systems
Air conditioning is rarely a necessity given the cool 58.7°F summer average. Residents should instead prioritize heavy-duty insulation and reliable heating to manage the persistent cold that defines the region.
Frequently Asked Questions
What is the average temperature in Glacier County?
How much rain does Glacier County get?
How hot does Glacier County get in summer?
How cold are winters in Glacier County?
Track your own weather in Glacier County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.