April in Lenexa averages a daily high of 18.8°C with nights around 7.3°C. Expect roughly 10.4 wet days totalling 94.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lenexa is September–October.
Based on OLATHE JOHNSON CO EXECUTIVE AIRPORT, KS US (11.5km), 1995–2024. 28 years of April data.