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

Maine Weather in May, USA ; High Temperature. 19°C · 66°F ; Low Temperature. 9°C · 48°F ; Rainfall. 1 mm ; Chance of Rain. 42 % ; Chance of Snow Day. 1 %.

Get the monthly weather forecast for Maine, ME, including daily high/low, historical averages, to help you plan ahead.

Maine Weather in May, USA ; Temperature. 14°C · 57 ; High Temperature. 19°C · 66 ; Low Temperature. 9°C · 48 ; Rainfall Days. 17 ; Rainfall. 90 ...

Temperatures are up to 65°F. The minimum is 50°F. Thus, the mean temperature average on this month of may in Maine is 58°F. These temperatures are far removed ...

May weather in Portland Maine, United States. Daily high temperatures increase by 9°F, from 58°F to 67°F, rarely falling below 48°F or exceeding 79°F.

The weather in Portland in May is moderately chilly and breezy, with average highs of 61°F (16°C) and lows of 47°F (8°C).

The temperature reaches around 17℃ during the daytime in May, falling away to 5℃ at night. The UV index will be moderate at this time of year, so not something ...

May. Maine Weather. Temperature: average high of 64°, average low of 44°, record high of 96° ( ...

Get the monthly weather forecast for Portland, ME, including daily high/low, historical averages, to help you plan ahead.