Records for Portland Area, Maine (PWMthr) on 05-31
Record Highs
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1: 94°F (1987)
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2: 92°F (2013)
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3: 92°F (1944)
Record Lows
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1: 31°F (1961)
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2: 34°F (1953)
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3: 35°F (1964)
Lowest Highs
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1: 64°F (1962)
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2: 61°F (2016)
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3: 59°F (1944)
Highest Lows
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1: 54°F (1945)
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2: 55°F (2005)
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3: 55°F (1993)
Highest May temperature:
94°F on 05-31-1987.
Lowest May temperature:
23°F on 05-09-1956.
Average temperature is 59.4°F
Average high is 68.6°F
Average low is 50.2°F
Temperature data from 1874 to 2022.
Record Precipitation
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1: 3.16" (1984)
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2: 2.34" (1940)
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3: 1.51" (1896)
Precipitation data from 1871 to 2022.