Records for Tri-Cities Area, Washington (PSCthr) on 05-18
Record Highs
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1: 99°F (2006)
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2: 96°F (2008)
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3: 95°F (1956)
Record Lows
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1: 31°F (1905)
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2: 36°F (2011)
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3: 36°F (2001)
Lowest Highs
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1: 63°F (2008)
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2: 60°F (2006)
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3: 59°F (1985)
Highest Lows
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1: 59°F (1991)
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2: 60°F (1948)
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3: 61°F (1982)
Highest May temperature:
104°F on 05-30-1983.
Lowest May temperature:
26°F on 05-01-1905.
Average temperature is 62.2°F
Average high is 77.3°F
Average low is 47.2°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 0.24" (1948)
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2: 0.21" (1991)
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3: 0.16" (2010)
Precipitation data from 1894 to 2022.