January in Champaign averages a daily high of 1.1°C with nights around -7.5°C. Expect roughly 10 wet days totalling 59.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Champaign is September.
Based on CHAMPAIGN 3 S, IL US (3.6km), 1995–2024. 30 years of January data.