Records for Hillsboro Area, Oregon (HIOthr) on 12-30
Record Highs
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1: 58°F (1958)
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2: 57°F (1995)
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3: 54°F (1998)
Record Lows
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1: 8°F (1968)
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2: 12°F (1990)
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3: 15°F (1978)
Lowest Highs
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1: 48°F (1996)
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2: 45°F (1995)
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3: 45°F (1954)
Highest Lows
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1: 21°F (1968)
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2: 22°F (1990)
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3: 25°F (1978)
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 45.7°F
Average low is 33.1°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.70" (1983)
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2: 1.58" (1970)
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3: 1.36" (2002)
Precipitation data from 1929 to 2022.