Records for Hillsboro Area, Oregon (HIOthr) on 09-20
Record Highs
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1: 96°F (1952)
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2: 93°F (2014)
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3: 92°F (1999)
Record Lows
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1: 34°F (1947)
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2: 35°F (1983)
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3: 36°F (2001)
Lowest Highs
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1: 56°F (1939)
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2: 55°F (1995)
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3: 55°F (1979)
Highest Lows
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1: 60°F (2006)
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2: 61°F (1972)
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3: 61°F (1968)
Highest September temperature:
103°F on 09-03-1988.
Lowest September temperature:
29°F on 09-17-1965.
Average temperature is 61°F
Average high is 75.3°F
Average low is 46.8°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.18" (1982)
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2: 0.52" (1973)
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3: 0.51" (1945)
Precipitation data from 1929 to 2022.