May in Overland Park averages a daily high of 23.7°C with nights around 13°C. Expect roughly 12.5 wet days totalling 136.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Overland Park is September–October.
Based on OLATHE JOHNSON CO EXECUTIVE AIRPORT, KS US (15.9km), 1995–2024. 27 years of May data.