Records for Tri-Cities Area, Washington (PSCthr) on 05-09
Record Highs
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1: 98°F (1987)
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2: 93°F (2013)
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3: 93°F (1940)
Record Lows
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1: 27°F (1922)
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2: 29°F (1999)
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3: 31°F (2010)
Lowest Highs
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1: 63°F (1987)
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2: 60°F (1994)
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3: 57°F (1968)
Highest Lows
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1: 53°F (1948)
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2: 59°F (1915)
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3: 60°F (1999)
Highest May temperature:
104°F on 05-30-1983.
Lowest May temperature:
26°F on 05-01-1905.
Average temperature is 59.5°F
Average high is 75.1°F
Average low is 44°F
Temperature data from 1894 to 2022.
Record Precipitation
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1: 0.92" (1956)
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2: 0.40" (1918)
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3: 0.35" (1957)
Precipitation data from 1894 to 2022.