Records for Seattle City Area, Washington (SEWthr) on 09-30
Record Highs
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1: 81°F (1957)
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2: 78°F (1992)
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3: 78°F (1962)
Record Lows
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1: 40°F (2019)
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2: 42°F (1950)
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3: 42°F (1930)
Lowest Highs
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1: 61°F (1994)
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2: 58°F (1997)
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3: 58°F (1938)
Highest Lows
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1: 52°F (1919)
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2: 53°F (1897)
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3: 54°F (1937)
Highest September temperature:
92°F on 09-14-1937.
Lowest September temperature:
36°F on 09-21-1895.
Average temperature is 58.4°F
Average high is 66.6°F
Average low is 50.3°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 1.70" (1953)
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2: 1.45" (1937)
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3: 0.79" (2007)
Precipitation data from 1894 to 2022.