Iowa County Climate
Iowa County, Iowa
Avg Annual Temp
48.2°F
Annual Precip
37.7"
Annual Snowfall
28.1"
Extreme Heat Days
17.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Iowa County Weather
A Balanced Continental Profile
Iowa County records an annual average temperature of 48.2°F, placing it near the middle of the state's climate spectrum. It receives 37.7 inches of annual precipitation, slightly more than the national median.
Mirroring the State Average
Iowa County's 48.2°F temperature almost perfectly matches the statewide average of 48.0°F. It is slightly wetter than the state norm, receiving 37.7 inches of rain and snow compared to the 36.1-inch Iowa average.
Cooler and Snowier than Henry
Iowa County is cooler than Henry County to its south, which averages 49.6°F. It also sees more winter precipitation, recording 28.1 inches of snow compared to Henry's 25.3 inches.
Defined Seasons and Sudden Heat
The county experiences 17 days of extreme heat per year, primarily during a July that averages 73.3°F. Winter is cold and snowy, with 28.1 inches of accumulation and a January average of 19.4°F.
Equip for Both Extremes
The 17 days of 90°F heat require efficient air conditioning, while 28 inches of snow demand reliable winter tools. Homeowners should also prepare for 37.7 inches of annual precipitation with proper drainage and roofing.
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.