Records for Hillsboro Area, Oregon (HIOthr) on 09-27
Record Highs
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1: 95°F (2003)
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2: 94°F (1967)
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3: 92°F (1949)
Record Lows
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1: 30°F (1999)
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2: 31°F (1972)
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3: 34°F (1934)
Lowest Highs
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1: 57°F (1990)
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2: 56°F (2010)
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3: 56°F (1957)
Highest Lows
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1: 55°F (2013)
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2: 57°F (1986)
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3: 58°F (1981)
Highest September temperature:
103°F on 09-03-1988.
Lowest September temperature:
29°F on 09-17-1965.
Average temperature is 58.8°F
Average high is 72.4°F
Average low is 45.1°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.36" (1940)
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2: 1.01" (1981)
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3: 0.82" (1955)
Precipitation data from 1929 to 2022.