Records for Hillsboro Area, Oregon (HIOthr) on 12-15
Record Highs
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1: 58°F (1962)
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2: 56°F (1976)
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3: 54°F (1979)
Record Lows
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1: 12°F (1932)
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2: 18°F (1940)
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3: 20°F (2008)
Lowest Highs
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1: 48°F (1939)
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2: 47°F (1979)
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3: 45°F (2002)
Highest Lows
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1: 26°F (2008)
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2: 32°F (2016)
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3: 32°F (1940)
Highest December temperature:
64°F on 12-01-1951.
Lowest December temperature:
-2°F on 12-08-1972.
Average temperature is 39.4°F
Average high is 45.8°F
Average low is 33.1°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.53" (1939)
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2: 1.44" (1977)
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3: 1.43" (1981)
Precipitation data from 1929 to 2022.