Records for Ontario Area, Oregon (ONOthr) on 12-20
Record Highs
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1: 55°F (1955)
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2: 52°F (1957)
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3: 51°F (1961)
Record Lows
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1: -7°F (1990)
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2: -6°F (1985)
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3: -5°F (1945)
Lowest Highs
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1: 37°F (1981)
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2: 37°F (1957)
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3: 35°F (2020)
Highest Lows
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1: 11°F (1984)
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2: 14°F (1985)
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3: 18°F (1975)
Highest December temperature:
66°F on 12-22-1955.
Lowest December temperature:
-23°F on 12-10-1972.
Average temperature is 28.4°F
Average high is 35.2°F
Average low is 21.6°F
Temperature data from 1945 to 2022.
Record Precipitation
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1: 0.70" (2014)
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2: 0.40" (1969)
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3: 0.33" (1974)
Precipitation data from 1945 to 2022.