July in West Haven averages a daily high of 28.7°C with nights around 19.5°C. Expect roughly 10.5 wet days totalling 87.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit West Haven is May–June.
Based on NEW HAVEN TWEED AIRPORT, CT US (5km), 1995–2024. 22 years of July data.