Fergus County Climate
Fergus County, Montana
Avg Annual Temp
44.0°F
Annual Precip
16.9"
Annual Snowfall
57.9"
Extreme Heat Days
19.237499999999997
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.