Records for Tri-Cities Area, Washington (PSCthr) on 05-15
Record Highs
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1: 97°F (1939)
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2: 95°F (1924)
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3: 94°F (2012)
Record Lows
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1: 33°F (2017)
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2: 34°F (2009)
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3: 36°F (1920)
Lowest Highs
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1: 64°F (1921)
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2: 62°F (1949)
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3: 59°F (1924)
Highest Lows
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1: 54°F (1959)
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2: 60°F (1955)
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3: 60°F (1908)
Highest May temperature:
104°F on 05-30-1983.
Lowest May temperature:
26°F on 05-01-1905.
Average temperature is 61.4°F
Average high is 76.6°F
Average low is 46.1°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 0.49" (2005)
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2: 0.44" (2011)
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3: 0.36" (2016)
Precipitation data from 1894 to 2022.