Champaign County Climate
Champaign County, Illinois
Avg Annual Temp
52.1°F
Annual Precip
40.0"
Annual Snowfall
20.9"
Extreme Heat Days
21.32
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Champaign County Weather
Champaign's climate sits below the national median
Champaign's annual average temperature of 52.1°F falls slightly below the national median, characterizing its humid continental climate. The county receives 40.0 inches of annual precipitation, which aligns closely with typical Midwestern weather patterns.
A cooler pocket within the Prairie State
The county remains cooler than the Illinois state average of 52.8°F. This positioning places it in the middle tier of Illinois counties, avoiding the extreme heat found further south.
Snowier and cooler than its southern neighbors
With 20.9 inches of annual snow, Champaign sees more winter accumulation than Christian County’s 14.9 inches. However, its 21 extreme heat days are significantly fewer than the 30 days recorded in Christian.
Defined seasons with manageable summer heat
July averages a warm 74.6°F, while January temperatures drop to a brisk 25.6°F. The region experiences 21 days of extreme heat over 90°F, which is lower than the state's southern regions.
Prepare for variable winters and moderate snow
Homeowners should maintain reliable snow shovels and ice melt for the 20.9 inches of annual snowfall. Efficient heating systems are essential to handle the 28.9°F winter average and frequent sub-freezing nights.
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.