Records for Portland Area, Oregon (PDXthr) on 05-21
Record Highs
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1: 87°F (1988)
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2: 85°F (2001)
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3: 85°F (1958)
Record Lows
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1: 38°F (1955)
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2: 40°F (1992)
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3: 40°F (1971)
Lowest Highs
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1: 58°F (2015)
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2: 57°F (1942)
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3: 56°F (1958)
Highest Lows
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1: 52°F (1960)
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2: 54°F (2010)
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3: 55°F (1957)
Highest May temperature:
100°F on 05-28-1983.
Lowest May temperature:
29°F on 05-01-1954.
Average temperature is 59.7°F
Average high is 69.2°F
Average low is 50.3°F
Temperature data from 1940 to 2022.
Record Precipitation
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1: 0.74" (2006)
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2: 0.49" (2013)
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3: 0.44" (1996)
Precipitation data from 1940 to 2022.