Records for Tri-Cities Area, Washington (PSCthr) on 12-31
Record Highs
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1: 59°F (1945)
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2: 57°F (1998)
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3: 57°F (1958)
Record Lows
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1: -5°F (2021)
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2: -2°F (1911)
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3: -1°F (1927)
Lowest Highs
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1: 46°F (1938)
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2: 44°F (1954)
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3: 44°F (1953)
Highest Lows
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1: 6°F (1968)
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2: 11°F (1990)
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3: 12°F (1927)
Highest December temperature:
71°F on 12-01-2021.
Lowest December temperature:
-29°F on 12-13-1919.
Average temperature is 33.3°F
Average high is 40°F
Average low is 26.7°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 1.13" (1913)
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2: 0.50" (1931)
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3: 0.47" (2005)
Precipitation data from 1894 to 2022.