August in Parsippany averages a daily high of 28.9°C with nights around 16.9°C. Expect roughly 10 wet days totalling 111.9mm. 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 August data.