Records for Hillsboro Area, Oregon (HIOthr) on 12-28
Record Highs
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1: 60°F (1980)
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2: 57°F (1963)
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3: 57°F (1961)
Record Lows
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1: 18°F (1978)
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2: 19°F (1985)
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3: 20°F (1983)
Lowest Highs
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1: 50°F (1998)
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2: 49°F (2011)
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3: 49°F (1937)
Highest Lows
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1: 32°F (1971)
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2: 34°F (2021)
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3: 34°F (1989)
Highest December temperature:
64°F on 12-01-1951.
Lowest December temperature:
-2°F on 12-08-1972.
Average temperature is 39.3°F
Average high is 45.6°F
Average low is 33°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.97" (1996)
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2: 1.34" (1945)
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3: 1.14" (1965)
Precipitation data from 1929 to 2022.