Typical Weather in New Haven, CT in September
77° F Avg High
58° F Avg Low
5 Rainy Days
☀️ Temperature Summary
September is a popular time of year to visit, with an inviting climate characterized by warm temperatures. Highs in September are typically around 77°F, which is warmer than usual in New Haven. You can expect overnight lows near 58°F most days. Daily high temperatures can range between 81°F and 72°F for the month of September.
September is a great time to visit New Haven, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
You can expect about a 15% chance of rain for any given day in September. It's one of the drier months of the year for New Haven, with total rainfall for the month around 3 inches.
Rainfall Throughout the Year
Planning a trip to New Haven? Try our free trip weather planner