Adams County Climate
Adams County, Iowa
Avg Annual Temp
49.4°F
Annual Precip
35.3"
Annual Snowfall
27.8"
Extreme Heat Days
17.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Adams County Weather
Adams Stays Cooler Than National Average
Adams County averages 49.4°F, positioning it below the national median but within the typical Midwestern range. The local climate features moderate precipitation of 35.3 inches annually.
Among Iowa's Warmer Southern Tier
Adams is over a degree warmer than the statewide average of 48.0°F. This makes it one of the more temperate counties in the southern part of the state.
Consistent Weather with Regional Neighbors
It shares similar heat patterns with Adair, though it records slightly more annual snowfall at 27.8 inches. Its annual precipitation of 35.3 inches is slightly lower than the state benchmark.
High Summer Heat and Chilly Winters
Summer heat peaks with 17 days above 90°F, while July averages 74.2°F. Winter remains cold with an average temperature of 24.9°F from December through February.
Maintenance for Snowy Adams County Winters
Plan for significant winter maintenance to manage the 27.8 inches of average snowfall. Cooling costs likely peak during the 17 extreme heat days in mid-summer.
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.