Fergus County Climate
Fergus County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
44.0°F
Annual Precip
16.9"
Annual Snowfall
57.9"
Extreme Heat Days
19
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4b
Minimum winter temperature range for plant survival
1,869
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Fergus County
Climate Verdict
Fergus County has a cool, averaging 44.0°F annually, semi-arid conditions with only 16.9 inches of annual precipitation, rare extreme heat with only 19.237499999999997 days above 90°F annually, moderate snowfall of 57.9 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 22.6°F. summers are pleasantly cool with July averaging 68.0°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Fergus County closely matches the Montana statewide average temperature of 43.7°F.
Climate Profile
About Fergus County Weather
Cool, snowy central Montana
Fergus County maintains an annual average of 44.0°F, characteristic of the high-elevation central Montana plains. It receives a robust 57.9 inches of snowfall, making it significantly snowier than the national average.
Abundant precipitation for Montana
Fergus averages 16.9 inches of total precipitation, exceeding the state average of 15.4 inches. This extra moisture often falls as snow, with 57.9 inches recorded annually compared to the lighter totals in the east.
Wetter than eastern neighbors
Compared to Fallon County, Fergus receives about 2 inches more precipitation and 23 inches more snow annually. Its average temperature of 44.0°F is identical to Fallon, despite the difference in moisture.
Moderate summers, snowy winters
July stays comfortable with an average of 68.0°F and only 19 days of extreme heat. However, winter is significant, with a December-February average of 23.7°F and nearly five feet of total annual snow.
Focus on snow management
With 57.9 inches of snow, reliable four-wheel drive and snow-clearing tools are essential for residents. Moderate summer temperatures mean that natural ventilation often suffices for cooling during the 19 days of 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.