Records for Hillsboro Area, Oregon (HIOthr) on 09-30
Record Highs
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1: 92°F (1993)
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2: 89°F (1987)
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3: 87°F (1988)
Record Lows
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1: 33°F (1983)
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2: 33°F (1950)
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3: 34°F (2019)
Lowest Highs
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1: 62°F (2000)
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2: 58°F (1957)
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3: 58°F (1951)
Highest Lows
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1: 53°F (2007)
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2: 58°F (2002)
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3: 59°F (1964)
Highest September temperature:
103°F on 09-03-1988.
Lowest September temperature:
29°F on 09-17-1965.
Average temperature is 57.7°F
Average high is 71.1°F
Average low is 44.4°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.28" (2005)
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2: 0.86" (1951)
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3: 0.73" (1937)
Precipitation data from 1929 to 2022.