Average Temperatures for Maine in May





Average temperatures for May at cities, communities, lakes and other locations throughout Maine are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for Maine's Coast, Central Maine and Northern Maine.

The tables give the normals for maximum and minimum monthly temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Maine Coast

Average May temperatures
High °F Low °F Place High °C Low °C
65 45 Acadia National Park 18 7
63 41 Belfast 17 5
64 44 Brunswick 18 7
60 43 Eastport 16 6
61 42 Jonesboro 16 6
62 43 Kennebunkport 16 6
65 45 Newcastle 18 7
64 46 Portland 18 8
61 43 Tenants Harbor 16 6

Central Maine

Average daily temperatures in May
High °F Low °F Place High °C Low °C
66 45 Augusta 19 7
66 43 Bangor 19 6
65 40 Dover-Foxcroft 19 4
62 40 Flagstaff Lake, Long Falls Dam 17 4
64 42 Grand Lake Stream 18 6
65 46 Lewiston 19 8
62 39 Lower Richardson Lake, Middle Dam 16 4
63 37 Rangeley 17 3
67 43 Rumford 19 6
66 43 Waterville 19 6

Northern Maine

May temperatures: daily averages
High °F Low °F Place High °C Low °C
61 37 Fort Kent 16 3
64 41 Millinocket 18 5
62 38 Moosehead Lake, Brassua Dam 16 3
65 41 Presque Isle 18 5
Reference

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

Maine Temperatures
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