September in Parma averages a daily high of 24°C with nights around 13.7°C. Expect roughly 9.8 wet days totalling 96.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Parma is May–September.
Based on CLEVELAND HOPKINS INTERNATIONAL AIRPORT, OH US (11.5km), 1995–2024. 30 years of September data.