Champaign County Climate
Champaign County, Illinois
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
52.1°F
Annual Precip
40.0"
Annual Snowfall
20.9"
Extreme Heat Days
21
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,489
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Champaign County
Climate Verdict
Champaign County has a mild, with an average annual temperature of 52.1°F, moderately wet with 40.0 inches of annual precipitation, occasional hot days — 21.32 per year above 90°F, moderate snowfall of 20.9 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 25.6°F. summers are warm — July averages 74.6°F. The 49°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Champaign County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Champaign County closely matches the Illinois statewide average temperature of 52.8°F.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.