Records for Seattle City Area, Washington (SEWthr) on 12-18
Record Highs
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1: 58°F (1917)
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2: 56°F (2003)
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3: 56°F (1959)
Record Lows
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1: 12°F (1924)
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2: 23°F (1964)
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3: 24°F (1990)
Lowest Highs
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1: 51°F (1966)
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2: 50°F (1979)
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3: 49°F (1936)
Highest Lows
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1: 23°F (1924)
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2: 32°F (1921)
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3: 33°F (1964)
Highest December temperature:
65°F on 12-04-1939.
Lowest December temperature:
9°F on 12-21-1990.
Average temperature is 41.3°F
Average high is 45.9°F
Average low is 36.6°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 1.32" (1932)
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2: 1.01" (1933)
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3: 0.87" (1972)
Precipitation data from 1894 to 2022.