Records for Portland Area, Maine (PWMthr) on 05-23
Record Highs
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1: 87°F (1992)
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2: 86°F (1964)
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3: 84°F (2021)
Record Lows
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1: 34°F (1963)
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2: 37°F (1968)
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3: 37°F (1956)
Lowest Highs
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1: 59°F (2012)
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2: 57°F (1977)
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3: 57°F (1955)
Highest Lows
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1: 48°F (1974)
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2: 50°F (2011)
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3: 51°F (2003)
Highest May temperature:
94°F on 05-31-1987.
Lowest May temperature:
23°F on 05-09-1956.
Average temperature is 56.9°F
Average high is 66.1°F
Average low is 47.7°F
Temperature data from 1874 to 2022.
Record Precipitation
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1: 0.89" (1974)
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2: 0.88" (1872)
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3: 0.87" (2005)
Precipitation data from 1871 to 2022.