Records for Tri-Cities Area, Washington (PSCthr) on 09-28
Record Highs
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1: 89°F (2010)
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2: 89°F (1918)
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3: 88°F (2006)
Record Lows
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1: 28°F (1999)
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2: 33°F (2015)
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3: 33°F (1946)
Lowest Highs
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1: 61°F (1914)
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2: 60°F (1947)
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3: 60°F (1897)
Highest Lows
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1: 56°F (1977)
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2: 58°F (2019)
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3: 59°F (1925)
Highest September temperature:
102°F on 09-01-2022.
Lowest September temperature:
21°F on 09-24-1926.
Average temperature is 59.8°F
Average high is 75.6°F
Average low is 44°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 0.66" (1930)
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2: 0.21" (2007)
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3: 0.13" (1962)
Precipitation data from 1894 to 2022.