September in Cleveland averages a daily high of 23.8°C with nights around 16.2°C. Expect roughly 9.4 wet days totalling 75.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Cleveland is May–September.
Based on CLEVELAND BURKE LAKEFRONT AIRPORT, OH US (3.6km), 1995–2024. 26 years of September data.