Columbia County Climate
Columbia County, Wisconsin
Avg Annual Temp
46.3°F
Annual Precip
37.6"
Annual Snowfall
40.9"
Extreme Heat Days
10.625
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Columbia County Weather
Milder winters than northern neighbors
Columbia County's 46.3°F annual average is roughly 8 degrees below the national median but represents a warmer pocket of the state. It features a humid continental climate with more distinct seasonal transitions than the far north.
Warmer than the state average
The county is noticeably warmer than the Wisconsin average, beating the 44.4°F state mark by nearly two degrees. This places it in the warmer southern tier of the state's 72 counties.
Similar climate to southern neighbors
Columbia County's average of 46.3°F is nearly identical to Dane County to the south. It is significantly wetter than northern counties, recording 37.6 inches of annual precipitation.
Summer heat meets heavy rain
Residents experience 11 days of extreme heat over 90°F, which is higher than many nearby regions. Annual snowfall is moderate for the state at 40.9 inches, while July averages reach a warm 71.5°F.
Balance cooling and heating needs
With double-digit extreme heat days, central air conditioning is more important here than in northern Wisconsin. Residents should also prepare for 37.6 inches of annual precipitation with proper drainage and gutter maintenance.
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.