Records for Seattle City Area, Washington (SEWthr) on 05-20
Record Highs
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1: 90°F (1963)
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2: 83°F (1938)
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3: 82°F (1967)
Record Lows
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1: 40°F (2022)
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2: 40°F (2001)
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3: 41°F (1918)
Lowest Highs
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1: 63°F (1963)
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2: 56°F (1967)
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3: 55°F (1958)
Highest Lows
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1: 50°F (1927)
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2: 54°F (1920)
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3: 55°F (2007)
Highest May temperature:
92°F on 05-13-1934.
Lowest May temperature:
35°F on 05-01-1954.
Average temperature is 57.7°F
Average high is 66.2°F
Average low is 49.2°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 0.90" (1930)
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2: 0.77" (1912)
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3: 0.76" (1968)
Precipitation data from 1894 to 2022.