October in Parsippany averages a daily high of 18.6°C with nights around 7°C. Expect roughly 11 wet days totalling 130mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Parsippany is May–June.
Based on BOONTON 1 SE, NJ US (4.5km), 1995–2024. 23 years of October data.