May in Cleveland averages a daily high of 20.7°C with nights around 12.1°C. Expect roughly 13.1 wet days totalling 88.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Cleveland is May–September.
Based on CLEVELAND BURKE LAKEFRONT AIRPORT, OH US (3.6km), 1995–2024. 27 years of May data.