Records for Portland Area, Oregon (PDXthr) on 05-18
Record Highs
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1: 86°F (1963)
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2: 85°F (2008)
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3: 85°F (2006)
Record Lows
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1: 38°F (2003)
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2: 41°F (2001)
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3: 41°F (1976)
Lowest Highs
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1: 58°F (1993)
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2: 57°F (2008)
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3: 57°F (1956)
Highest Lows
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1: 52°F (1974)
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2: 56°F (1991)
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3: 58°F (2013)
Highest May temperature:
100°F on 05-28-1983.
Lowest May temperature:
29°F on 05-01-1954.
Average temperature is 59.3°F
Average high is 68.7°F
Average low is 49.9°F
Temperature data from 1940 to 2022.
Record Precipitation
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1: 1.06" (2014)
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2: 0.59" (2005)
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3: 0.53" (1981)
Precipitation data from 1940 to 2022.