Records for Seattle Tacoma Area, Washington (SEAthr) on 09-21
Record Highs
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1: 88°F (1974)
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2: 88°F (1952)
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3: 86°F (1975)
Record Lows
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1: 39°F (1960)
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2: 39°F (1955)
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3: 42°F (1945)
Lowest Highs
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1: 60°F (2011)
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2: 60°F (1995)
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3: 59°F (2018)
Highest Lows
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1: 57°F (1972)
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2: 57°F (1945)
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3: 59°F (1968)
Highest September temperature:
98°F on 09-02-1988.
Lowest September temperature:
35°F on 09-27-1972.
Average temperature is 60.7°F
Average high is 69.2°F
Average low is 52.1°F
Temperature data from 1945 to 2022.
Record Precipitation
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1: 0.94" (1981)
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2: 0.72" (1972)
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3: 0.34" (1948)
Precipitation data from 1945 to 2022.