Records for Hillsboro Area, Oregon (HIOthr) on 09-01
Record Highs
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1: 101°F (1987)
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2: 96°F (2017)
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3: 95°F (1950)
Record Lows
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1: 37°F (1973)
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2: 38°F (2008)
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3: 38°F (1999)
Lowest Highs
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1: 60°F (1974)
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2: 58°F (1978)
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3: 58°F (1956)
Highest Lows
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1: 63°F (1941)
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2: 64°F (1975)
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3: 65°F (2000)
Highest September temperature:
103°F on 09-03-1988.
Lowest September temperature:
29°F on 09-17-1965.
Average temperature is 65.1°F
Average high is 80.2°F
Average low is 50°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.96" (1941)
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2: 0.76" (1971)
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3: 0.39" (1991)
Precipitation data from 1929 to 2022.