Records for Hillsboro Area, Oregon (HIOthr) on 05-04
Record Highs
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1: 89°F (1992)
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2: 87°F (1944)
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3: 84°F (1966)
Record Lows
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1: 30°F (1952)
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2: 31°F (1930)
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3: 32°F (1962)
Lowest Highs
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1: 55°F (2017)
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2: 55°F (1998)
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3: 52°F (2005)
Highest Lows
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1: 50°F (2010)
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2: 52°F (1988)
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3: 52°F (1975)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 54.2°F
Average high is 66.3°F
Average low is 42.2°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.95" (2009)
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2: 0.78" (1936)
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3: 0.56" (1995)
Precipitation data from 1929 to 2022.