July in Olathe averages a daily high of 31.2°C with nights around 20.6°C. Expect roughly 9 wet days totalling 104.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Olathe is September–October.
Based on OLATHE JOHNSON CO EXECUTIVE AIRPORT, KS US (7.7km), 1995–2024. 29 years of July data.