Records for Hillsboro Area, Oregon (HIOthr) on 05-08
Record Highs
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1: 95°F (1987)
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2: 87°F (1994)
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3: 85°F (1969)
Record Lows
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1: 26°F (1935)
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2: 30°F (2002)
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3: 30°F (1930)
Lowest Highs
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1: 58°F (1987)
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2: 55°F (1957)
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3: 52°F (1971)
Highest Lows
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1: 50°F (1933)
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2: 52°F (2022)
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3: 53°F (1999)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 55.3°F
Average high is 67.4°F
Average low is 43.1°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.50" (1991)
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2: 0.36" (2014)
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3: 0.31" (2005)
Precipitation data from 1929 to 2022.