Average Rainfall for Connecticut in September

The tables below give monthly averages for rainfall during September at cities and towns in Connecticut.

Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The rainfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for places in Coastal Connecticut and Inland Connecticut.

Coastal Connecticut

Average monthly precipitation in September
Days Place Inches Milli­metres
8 Bridgeport 4.0 101
10 Groton 4.3 109
9 New Haven 4.0 102
9 New London 3.8 97
9 Norwich 4.8 122
9 Stamford 5.2 132

Inland Connecticut

September averages for total rainfall
Days Place Inches Milli­metres
9 Burlington 5.0 127
10 Danbury 4.9 124
9 Hartford 4.4 112
10 Norfolk 4.9 124
11 Torrington 5.0 127
9 West Thompson Lake 3.9 99
10 Woodbury 5.0 126
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Connecticut Precipitation
Back to Top