Records for Hillsboro Area, Oregon (HIOthr) on 09-23
Record Highs
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1: 95°F (1987)
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2: 95°F (1952)
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3: 93°F (1990)
Record Lows
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1: 31°F (1930)
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2: 34°F (1961)
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3: 34°F (1937)
Lowest Highs
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1: 57°F (2020)
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2: 57°F (1978)
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3: 56°F (2014)
Highest Lows
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1: 51°F (1934)
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2: 54°F (1948)
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3: 59°F (1984)
Highest September temperature:
103°F on 09-03-1988.
Lowest September temperature:
29°F on 09-17-1965.
Average temperature is 60.1°F
Average high is 74.1°F
Average low is 46.1°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.70" (1948)
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2: 0.64" (2014)
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3: 0.34" (1977)
Precipitation data from 1929 to 2022.