March in Berwyn averages a daily high of 9°C with nights around 0.1°C. Expect roughly 10.2 wet days totalling 54.3mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Berwyn is May–June.
Based on CHICAGO MIDWAY AIRPORT, IL US (8km), 1995–2024. 27 years of March data.