Records for Seattle City Area, Washington (SEWthr) on 09-21
Record Highs
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1: 89°F (1952)
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2: 84°F (1995)
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3: 84°F (1974)
Record Lows
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1: 36°F (1895)
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2: 43°F (1993)
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3: 44°F (2002)
Lowest Highs
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1: 59°F (2018)
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2: 59°F (1976)
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3: 58°F (1994)
Highest Lows
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1: 55°F (1945)
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2: 57°F (1933)
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3: 57°F (1897)
Highest September temperature:
92°F on 09-14-1937.
Lowest September temperature:
36°F on 09-21-1895.
Average temperature is 61.1°F
Average high is 69.9°F
Average low is 52.3°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 1.58" (1972)
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2: 1.04" (1903)
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3: 0.45" (1901)
Precipitation data from 1894 to 2022.