May in Plainfield averages a daily high of 22.7°C with nights around 10°C. Expect roughly 12.3 wet days totalling 110.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Plainfield is May–June.
Based on CANOE BROOK, NJ US (13km), 1995–2024. 29 years of May data.