Weather in New Haven in September
The weather in New Haven in September is relatively warm in terms of temperature, since there are 15-24 degrees on average. However, there are around 12 days of rain this month, so it is highly recommended to pack an umbrella.
Avg Temp
15° - 24°
Avg Rainy Days
12
![](https://weather-finder.com/img/rain.jpg)
Avg Dry Days
18
![](https://weather-finder.com/img/sun.png)
Avg Snow Days
0
Weather Facts - New Haven in September
* The warmest temperature recorded in in September is 33°C
* The coldest temperature recorded in New Haven in September is 4°C
* The average rainfall in New Haven in September is 102 mm