Iowa County Climate
Iowa County, Wisconsin
Avg Annual Temp
45.7°F
Annual Precip
39.6"
Annual Snowfall
41.1"
Extreme Heat Days
6.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Iowa County Weather
Cool Midwest Continental Climate
Iowa County maintains an annual average temperature of 45.7°F, placing it significantly cooler than the national median of 53.8°F. The region is defined by its humid continental climate, featuring distinct, sharp seasonal shifts.
Warmer than the Wisconsin Average
At 45.7°F, Iowa County is roughly 1.3 degrees warmer than the Wisconsin state average of 44.4°F. It ranks among the slightly milder counties in the southern half of the state.
Drier and Cooler than Southern Neighbors
While Iowa County receives a substantial 39.6 inches of precipitation, it is slightly cooler than nearby Jefferson County at 46.9°F. It remains notably warmer than the more northern Jackson County average of 43.9°F.
Moderate Summers and Snowy Winters
Residents experience about 6 days of extreme heat above 90°F during the 70.7°F July average. Winters bring a significant 41.1 inches of snow as temperatures drop to a January average of 17.4°F.
Prepare for Snow and Storms
Homeowners should prioritize high-quality insulation to handle the 20.7°F winter average. Reliable snow removal equipment is essential to manage the 41.1 inches of annual snowfall.
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.