Lake County Climate
Lake County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.9°F
Annual Precip
17.2"
Annual Snowfall
33.6"
Extreme Heat Days
14
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
1,787
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Lake County
Climate Verdict
Lake County has a cool, averaging 45.9°F annually, semi-arid conditions with only 17.2 inches of annual precipitation, rare extreme heat with only 13.940000000000001 days above 90°F annually, moderate snowfall of 33.6 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 27.5°F. summers are pleasantly cool with July averaging 67.4°F. The 40°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Lake County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Lake County closely matches the Montana statewide average temperature of 43.7°F.
Climate Profile
About Lake County Weather
A temperate pocket in the Rockies
Lake County averages 45.9°F annually, making it warmer than most of its Montana peers but still below the national median. It receives 17.2 inches of annual precipitation, providing a semi-moist mountain environment.
Among the warmest counties in Montana
Lake County's 45.9°F average is over two degrees higher than the Montana state average of 43.7°F. This makes it one of the more temperate regions in the state.
Warmer than Granite and Glacier
Lake County is notably warmer than nearby Granite (42.5°F) and much milder than Glacier County (39.9°F). It enjoys some of the most moderate temperatures in western Montana.
Milder winters and manageable summers
Winters are relatively mild for Montana, with a January average of 27.5°F and 33.6 inches of snow. Summers stay pleasant with only 14 days over 90°F and a July average of 67.4°F.
Plan for a balanced, four-season climate
With 14 extreme heat days and 33.6 inches of snow, residents need a versatile gear set for all seasons. The 28.3°F winter average makes it slightly easier to heat homes than in the state's colder northern counties.
Frequently Asked Questions
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Track your own weather in Lake County
Ambient Weather personal weather stations give you hyperlocal climate data.
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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.