September in Clifton averages a daily high of 25.7°C with nights around 15.2°C. Expect roughly 8.9 wet days totalling 109.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Clifton is May–June.
Based on TETERBORO AIRPORT, NJ US (9.1km), 1995–2024. 29 years of September data.