Records for Tri-Cities Area, Washington (PSCthr) on 05-21
Record Highs
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1: 95°F (1928)
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2: 95°F (1919)
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3: 94°F (1904)
Record Lows
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1: 33°F (2009)
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2: 34°F (2010)
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3: 36°F (1934)
Lowest Highs
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1: 62°F (1964)
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2: 60°F (1980)
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3: 59°F (2015)
Highest Lows
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1: 61°F (2010)
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2: 61°F (1960)
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3: 62°F (1932)
Highest May temperature:
104°F on 05-30-1983.
Lowest May temperature:
26°F on 05-01-1905.
Average temperature is 63°F
Average high is 77.8°F
Average low is 48.1°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 0.81" (1972)
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2: 0.52" (1986)
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3: 0.51" (2016)
Precipitation data from 1894 to 2022.