Records for Portland Area, Maine (PWMthr) on 05-22
Record Highs
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1: 90°F (1992)
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2: 89°F (1959)
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3: 88°F (1980)
Record Lows
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1: 34°F (1950)
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2: 35°F (1967)
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3: 36°F (2002)
Lowest Highs
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1: 63°F (2009)
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2: 60°F (1987)
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3: 57°F (2021)
Highest Lows
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1: 50°F (2011)
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2: 50°F (2005)
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3: 52°F (1990)
Highest May temperature:
94°F on 05-31-1987.
Lowest May temperature:
23°F on 05-09-1956.
Average temperature is 56.6°F
Average high is 65.9°F
Average low is 47.4°F
Temperature data from 1874 to 2022.
Record Precipitation
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1: 1.79" (1920)
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2: 1.36" (1939)
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3: 1.33" (1919)
Precipitation data from 1871 to 2022.