Adair County Climate
Adair County, Iowa
Avg Annual Temp
49.1°F
Annual Precip
36.5"
Annual Snowfall
25.5"
Extreme Heat Days
18.8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Adair County Weather
Adair's Temperature Falls Below National Median
Adair County averages 49.1°F annually, sitting several degrees below the national median of 53.0°F. This humid continental climate experiences sharp transitions between the four seasons.
Warmer Than the Iowa Average
Adair is warmer than the Iowa state average of 48.0°F. It ranks among the warmer southern third of counties in the state.
A Temperate Presence in Central Iowa
Its 49.1°F average is nearly identical to Black Hawk County but cooler than southern Appanoose. It records 36.5 inches of annual precipitation, closely matching the state mean.
Hot Summers and Snowy Winters
Residents face 19 extreme heat days where temperatures top 90°F annually. Winters bring an average of 25.5 inches of snow, with January lows dipping to 20.2°F.
Preparing for Adair's Climate Extremes
Ensure HVAC systems can handle nearly three weeks of 90-degree heat each summer. Winter preparations should account for over two feet 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.