March in Peoria averages a daily high of 10.6°C with nights around 0°C. Expect roughly 10.4 wet days totalling 71.4mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Peoria is September.
Based on GENERAL WAYNE A. DOWNING INTERNATIONAL AIRPORT, IL US (8.5km), 1995–2024. 30 years of March data.