Records for Hillsboro Area, Oregon (HIOthr) on 12-22
Record Highs
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1: 61°F (1940)
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2: 58°F (1933)
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3: 57°F (1999)
Record Lows
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1: 4°F (1998)
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2: 6°F (1990)
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3: 14°F (1983)
Lowest Highs
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1: 53°F (1933)
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2: 48°F (1950)
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3: 46°F (1972)
Highest Lows
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1: 19°F (1990)
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2: 24°F (2022)
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3: 24°F (1983)
Highest December temperature:
64°F on 12-01-1951.
Lowest December temperature:
-2°F on 12-08-1972.
Average temperature is 39.2°F
Average high is 45.5°F
Average low is 32.9°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.70" (1936)
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2: 1.67" (1964)
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3: 1.00" (1933)
Precipitation data from 1929 to 2022.