Records for Hillsboro Area, Oregon (HIOthr) on 12-17
Record Highs
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1: 62°F (1980)
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2: 61°F (1937)
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3: 58°F (1994)
Record Lows
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1: 8°F (1964)
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2: 17°F (1965)
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3: 18°F (1944)
Lowest Highs
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1: 49°F (1999)
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2: 47°F (1956)
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3: 47°F (1937)
Highest Lows
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1: 23°F (1964)
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2: 33°F (2016)
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3: 35°F (1932)
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 45.7°F
Average low is 33°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.75" (2015)
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2: 1.00" (1961)
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3: 0.92" (1931)
Precipitation data from 1929 to 2022.