Records for Hillsboro Area, Oregon (HIOthr) on 09-28
Record Highs
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1: 88°F (1949)
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2: 87°F (1936)
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3: 87°F (1935)
Record Lows
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1: 33°F (1999)
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2: 34°F (1945)
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3: 35°F (1965)
Lowest Highs
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1: 58°F (1969)
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2: 57°F (2010)
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3: 57°F (1976)
Highest Lows
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1: 56°F (1972)
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2: 57°F (1971)
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3: 58°F (2007)
Highest September temperature:
103°F on 09-03-1988.
Lowest September temperature:
29°F on 09-17-1965.
Average temperature is 58.4°F
Average high is 72°F
Average low is 44.9°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.73" (2013)
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2: 1.06" (1962)
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3: 0.62" (2007)
Precipitation data from 1929 to 2022.