August in Piscataway averages a daily high of 29.5°C with nights around 17.9°C. Expect roughly 10.5 wet days totalling 118.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Piscataway is May–June.
Based on NEW BRUNSWICK 3 SE, NJ US (3.5km), 1995–2024. 30 years of August data.