Champaign County Climate
Champaign County, Ohio
Avg Annual Temp
51.2°F
Annual Precip
42.4"
Annual Snowfall
—
Extreme Heat Days
16.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Champaign County Weather
Balanced Midwestern Temperatures
Champaign County averages 51.2°F annually, sitting just below the national median for temperate zones. It represents a classic humid continental climate with four distinct seasons.
Slightly Cooler Than State Norms
At 51.2°F, the county is slightly cooler than the Ohio state average of 51.5°F. However, its 42.4 inches of annual precipitation makes it wetter than the state average of 41.2 inches.
Cooler Than Southern Neighbors
Champaign maintains a cooler profile than nearby Butler County, which averages 53.7°F. It closely mirrors Crawford County’s temperature but sees fewer extreme heat days than the counties to its immediate south.
Moderate Summers and Brisk Winters
July brings an average high of 73.5°F with only 17 days reaching the 90°F mark. Winters are chilly, with January temperatures averaging 27.2°F and winter season averages dropping to 29.7°F.
Rain Gear and Efficient Heating
With over 42 inches of rain, reliable drainage and rain gear are essential for local residents. While snowfall data is limited, the sub-freezing January average suggests keeping winter home heating systems in top shape.
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.