Records for Tri-Cities Area, Washington (PSCthr) on 05-20
Record Highs
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1: 93°F (1928)
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2: 92°F (1958)
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3: 91°F (1919)
Record Lows
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1: 34°F (1920)
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2: 36°F (1974)
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3: 36°F (1929)
Lowest Highs
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1: 66°F (1895)
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2: 63°F (1925)
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3: 60°F (1993)
Highest Lows
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1: 56°F (1960)
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2: 59°F (1991)
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3: 62°F (1927)
Highest May temperature:
104°F on 05-30-1983.
Lowest May temperature:
26°F on 05-01-1905.
Average temperature is 62.7°F
Average high is 77.6°F
Average low is 47.8°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 0.50" (2020)
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2: 0.42" (1962)
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3: 0.39" (2006)
Precipitation data from 1894 to 2022.