Records for Portland Area, Maine (PWMthr) on 05-10
Record Highs
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1: 88°F (1979)
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2: 85°F (1987)
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3: 84°F (1985)
Record Lows
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1: 24°F (1947)
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2: 30°F (1955)
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3: 31°F (2010)
Lowest Highs
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1: 63°F (1979)
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2: 52°F (2015)
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3: 51°F (1990)
Highest Lows
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1: 42°F (1977)
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2: 46°F (1974)
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3: 47°F (2000)
Highest May temperature:
94°F on 05-31-1987.
Lowest May temperature:
23°F on 05-09-1956.
Average temperature is 53.1°F
Average high is 62.5°F
Average low is 43.7°F
Temperature data from 1874 to 2022.
Record Precipitation
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1: 1.27" (1977)
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2: 1.17" (1901)
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3: 1.09" (2012)
Precipitation data from 1871 to 2022.