September in Levittown averages a daily high of 24.2°C with nights around 15.8°C. Expect roughly 8 wet days totalling 90.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Levittown is August–October.
Based on FARMINGDALE REPUBLIC AIRPORT, NY US (8.3km), 1995–2024. 26 years of September data.