Cass County Climate
Cass County, Minnesota
Avg Annual Temp
41.1°F
Annual Precip
27.0"
Annual Snowfall
48.5"
Extreme Heat Days
3.26
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Cass County Weather
Deeply Chilled Below National Medians
Cass County averages 41.1°F annually, keeping it firmly in the cold-temperate category compared to the rest of the nation. The local climate is defined by long, dominant winters and short, pleasant summers.
Running Slightly Cooler and Drier than Average
The county's average temperature of 41.1°F falls about 1.7 degrees short of the Minnesota state average. It also sees less precipitation than the state norm, recording 27.0 inches annually against a 30.0-inch average.
A Transitional Climate in Central Minnesota
Cass County is drier than eastern neighbors like Chisago but remains significantly warmer than northern Cook County. It serves as a middle ground between the snowy north woods and the warmer southern prairies.
A Sanctuary from Extreme Summer Heat
Summer is brief and mild, with only three days a year hitting 90°F. Winter brings a sharp chill, as January averages 8.6°F and the county receives 48.5 inches of snow on average.
Focus on Winter Resilience Over AC
With only three days of extreme heat, central air conditioning is less critical than a robust, high-performance heating system. Residents should prepare for 48.5 inches of snow with reliable plowing services and high-quality winter apparel.
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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.