Records for Seattle City Area, Washington (SEWthr) on 12-21
Record Highs
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1: 63°F (1940)
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2: 57°F (1950)
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3: 57°F (1933)
Record Lows
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1: 9°F (1990)
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2: 16°F (1983)
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3: 21°F (2022)
Lowest Highs
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1: 50°F (1950)
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2: 50°F (1899)
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3: 49°F (2014)
Highest Lows
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1: 21°F (1990)
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2: 26°F (1983)
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3: 27°F (1998)
Highest December temperature:
65°F on 12-04-1939.
Lowest December temperature:
9°F on 12-21-1990.
Average temperature is 41.2°F
Average high is 45.8°F
Average low is 36.5°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 2.19" (2020)
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2: 1.02" (1933)
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3: 0.92" (1964)
Precipitation data from 1894 to 2022.