In October, Champaign typically sees daytime highs of 18.9°C and overnight lows around 5.8°C. Compared to the annual average high of 16.4°C, October runs +2.5°C.
October in Champaign averages a daytime high of 18.9°C and an overnight low of 5.8°C.
October runs +2.5°C compared to Champaign's annual average high of 16.4°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 18.9°C and cooler evenings around 5.8°C.