November in New Haven averages a daily high of 12.4°C with nights around 2.7°C. Expect roughly 9 wet days totalling 71.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit New Haven is May–June.
Based on NEW HAVEN TWEED AIRPORT, CT US (6.4km), 1995–2024. 24 years of November data.