Records for Hillsboro Area, Oregon (HIOthr) on 09-26
Record Highs
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1: 94°F (1991)
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2: 93°F (1949)
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3: 91°F (1967)
Record Lows
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1: 33°F (1961)
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2: 33°F (1945)
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3: 33°F (1934)
Lowest Highs
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1: 57°F (1957)
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2: 57°F (1956)
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3: 57°F (1947)
Highest Lows
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1: 60°F (1962)
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2: 61°F (1986)
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3: 61°F (1972)
Highest September temperature:
103°F on 09-03-1988.
Lowest September temperature:
29°F on 09-17-1965.
Average temperature is 59.1°F
Average high is 72.9°F
Average low is 45.4°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.70" (1948)
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2: 0.54" (1997)
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3: 0.51" (1995)
Precipitation data from 1929 to 2022.