May in Cicero averages a daily high of 21.8°C with nights around 11.3°C. Expect roughly 12.6 wet days totalling 104.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Cicero is May–June.
Based on CHICAGO MIDWAY AIRPORT, IL US (6.8km), 1995–2024. 28 years of May data.