December in North Peoria averages a daily high of 3.7°C with nights around -4.7°C. Expect roughly 9.9 wet days totalling 57.3mm. A hard month to visit for comfort alone.
Across the year, the best time to visit North Peoria is September.
Based on GENERAL WAYNE A. DOWNING INTERNATIONAL AIRPORT, IL US (10.1km), 1995–2024. 30 years of December data.