Average Precipitation for Maine in May





The tables below give monthly averages for rainfall plus snowfall during May 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 precipitation 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 May
Days Place Inches Milli­metres
14 Acadia National Park 4.5 114
10 Belfast 3.9 98
13 Brunswick 4.1 103
12 Eastport 3.3 83
11 Jonesboro 3.9 99
13 Kennebunkport 4.2 107
14 Newcastle 3.8 97
13 Portland 3.7 93
13 Tenants Harbor 3.5 90

Central Maine

May averages for total rainfall plus snowfall
Days Place Inches Milli­metres
13 Augusta 3.3 83
12 Bangor 3.3 85
13 Dover-Foxcroft 3.3 85
14 Flagstaff Lake, Long Falls Dam 3.6 92
11 Grand Lake Stream 3.3 85
12 Lewiston 3.2 81
15 Lower Richardson Lake, Middle Dam 3.7 94
14 Rangeley 3.7 93
11 Rumford 3.7 94
13 Waterville 3.3 85

Northern Maine

Average amount of rain and snow in May
Days Place Inches Milli­metres
14 Fort Kent 3.3 84
12 Millinocket 3.7 94
14 Moosehead Lake, Brassua Dam 3.7 93
13 Presque Isle 3.3 84
Reference

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

Maine Precipitation
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