October in Passaic averages a daily high of 19.3°C with nights around 8.8°C. Expect roughly 10.1 wet days totalling 103.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Passaic is May–June.
Based on TETERBORO AIRPORT, NJ US (6.1km), 1995–2024. 30 years of October data.