Records for Hillsboro Area, Oregon (HIOthr) on 09-25
Record Highs
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1: 91°F (1991)
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2: 90°F (2022)
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3: 89°F (1954)
Record Lows
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1: 29°F (1934)
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2: 31°F (1972)
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3: 35°F (2007)
Lowest Highs
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1: 57°F (1982)
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2: 57°F (1969)
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3: 56°F (2015)
Highest Lows
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1: 59°F (1933)
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2: 60°F (2013)
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3: 60°F (2001)
Highest September temperature:
103°F on 09-03-1988.
Lowest September temperature:
29°F on 09-17-1965.
Average temperature is 59.5°F
Average high is 73.3°F
Average low is 45.6°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.82" (2020)
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2: 0.53" (1997)
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3: 0.46" (2001)
Precipitation data from 1929 to 2022.