Champaign (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Champaign.
Climate overview of Champaign
Champaign, Illinois, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 29°C (84°F) in July, while winters cool to 1°C (34°F) in January.
The city has a wet climate, receiving around 1074 mm (42 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. June is the wettest month.
Champaign Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Champaign - and find the best time to visit.
Monthly Temperature in Champaign
Depending on the time of the year, temperatures range from comfortable to very cold in Champaign. On average, daytime temperatures range from a comfortable 29°C (84°F) in July to a very cold 1°C (34°F) in January.
Nighttime temperatures range from 18°C (64°F) in July to -8°C (18°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Champaign
Champaign has a relatively rain/snowy climate with high precipitation levels, averaging 1074 mm (42 in) of rain/snowfall annually. The seasons in Champaign bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 153 mm (6 in) of precipitation. This rainfall is distributed across 13 rainy days.
In contrast, the driest month, January, experiences much less snow/rainfall, totaling 48 mm (1.9 in) over 9 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Champaign Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Champaign
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: August and September
- Warmest weather: June, July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Champaign
What is the best time to visit Champaign?
August and September typically offer the most optimal weather in Champaign. In contrast, January, February and December tend to have less optimal conditions. Champaign has warm summers and very cold winters.
What temperatures can I expect in Champaign?
Daytime highs range from 1°C (34°F) in January to 29°C (84°F) in July. Nighttime lows range from -8°C (18°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Champaign get?
Annual rainfall is around 1074 mm (42 in). June is the wettest month with 153 mm (6 in), while January is the driest with 48 mm (1.9 in).
Champaign 3-Day Forecast
Champaign (IL) 3-Day Forecast
Champaign on the map
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