Iowa County Climate
Iowa County, Wisconsin
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.7°F
Annual Precip
39.6"
Annual Snowfall
41.1"
Extreme Heat Days
6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,485
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Iowa County
Climate Verdict
Iowa County has a cool, averaging 45.7°F annually, moderate rainfall of 39.6 inches per year, rare extreme heat with only 6.1 days above 90°F annually, moderate snowfall of 41.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 17.4°F. summers are warm — July averages 70.7°F. Residents experience a substantial 53°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Iowa County closely matches the Wisconsin statewide average temperature of 44.4°F, it is also noticeably wetter, receiving 5.1 inches more precipitation than the state average.
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 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.