October in Champaign averages a daily high of 19°C with nights around 6.6°C. Expect roughly 10.2 wet days totalling 86mm. Comfortable conditions for being outdoors all day.
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 October data.