October in Plainfield averages a daily high of 19.3°C with nights around 6.9°C. Expect roughly 11.3 wet days totalling 118.6mm. 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. 30 years of October data.