Sheridan County Climate
Sheridan County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
40.0°F
Annual Precip
14.6"
Annual Snowfall
31.3"
Extreme Heat Days
17
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
3b
Minimum winter temperature range for plant survival
1,860
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Sheridan County
Climate Verdict
Sheridan County has a cold, with an average annual temperature of 40.0°F, arid conditions receiving just 14.6 inches of precipitation annually, rare extreme heat with only 16.86 days above 90°F annually, moderate snowfall of 31.3 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 10.3°F. summers are pleasantly cool with July averaging 67.6°F. Residents experience a substantial 57°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Sheridan County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Sheridan County is 3.7°F cooler than the Montana statewide average of 43.7°F.
Climate Profile
About Sheridan County Weather
One of the Coldest in the Nation
Sheridan County averages just 40.0°F annually, placing it among the coldest regions in the lower 48 states. This extreme northern climate features long, bitter winters and short, intense summers.
Far Below State Temperature Averages
The county’s 40.0°F average is significantly colder than the Montana state average of 43.7°F. Residents experience a winter that is much harsher than the state norm.
Bitter Cold in the Northeast Corner
Sheridan is one of the state's coldest spots, with a January average of only 10.3°F. It receives 14.6 inches of precipitation annually, which is slightly below the state average of 15.4 inches.
A Winter-Dominant Seasonal Cycle
Winter temperatures average a frigid 13.1°F from December to February, making outdoor activity a challenge. July provides relief with a 67.6°F average, though there are still 17 days of extreme heat.
Survival Gear for the Deep Cold
Heating reliability is the top priority for Sheridan residents facing 10-degree January averages. Ensure your home is well-insulated and your vehicle is equipped for sub-zero starts and 31.3 inches of seasonal snow.
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.