September in Scranton averages a daily high of 23.6°C with nights around 12.2°C. Expect roughly 10.1 wet days totalling 111.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Scranton is May–June.
Based on WILKES BARRE SCRANTON INTERNATIONAL AIRPORT, PA US (9.7km), 1995–2024. 30 years of September data.