Records for Tri-Cities Area, Washington (PSCthr) on 09-18
Record Highs
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1: 97°F (1906)
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2: 94°F (1938)
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3: 93°F (1981)
Record Lows
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1: 30°F (1907)
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2: 32°F (1965)
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3: 37°F (1978)
Lowest Highs
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1: 67°F (1898)
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2: 63°F (1970)
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3: 62°F (1929)
Highest Lows
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1: 60°F (1947)
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2: 62°F (1978)
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3: 63°F (1941)
Highest September temperature:
102°F on 09-01-2022.
Lowest September temperature:
21°F on 09-24-1926.
Average temperature is 63.6°F
Average high is 80.2°F
Average low is 47°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 0.31" (1969)
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2: 0.30" (1968)
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3: 0.26" (2010)
Precipitation data from 1894 to 2022.