Average Rainfall for Maine in September





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

Each place has a total for the amount of precipitation it usually receives this month along with information on the number of days with wet weather. The count of days includes those 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 Maine's Coast, Central Maine and Northern Maine.

Maine Coast

Average monthly precipitation in September
Days Place Inches Milli­metres
11 Acadia National Park 4.2 107
7 Belfast 4.1 104
9 Brunswick 4.2 107
11 Eastport 4.3 110
9 Jonesboro 3.5 89
10 Kennebunkport 3.9 100
10 Newcastle 4.2 106
9 Portland 3.8 96
10 Tenants Harbor 4.0 102

Central Maine

September averages for total rainfall
Days Place Inches Milli­metres
10 Augusta 3.9 99
9 Bangor 3.8 96
10 Dover-Foxcroft 3.7 94
11 Flagstaff Lake, Long Falls Dam 3.2 82
9 Grand Lake Stream 3.5 90
9 Lewiston 3.7 95
13 Lower Richardson Lake, Middle Dam 3.2 82
11 Rangeley 3.5 88
9 Rumford 3.7 94
10 Waterville 3.8 97

Northern Maine

Average amount of rain in September
Days Place Inches Milli­metres
12 Fort Kent 3.7 94
11 Millinocket 3.9 99
11 Moosehead Lake, Brassua Dam 3.4 87
10 Presque Isle 3.5 89
Reference

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

Maine Precipitation
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