September in Greenburgh averages a daily high of 23.7°C with nights around 14.2°C. Expect roughly 10 wet days totalling 130.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Greenburgh is May–October.
Based on WESTCHESTER CO AIRPORT, NY US (12.1km), 1995–2024. 30 years of September data.