Records for Ontario Area, Oregon (ONOthr) on 05-21
Record Highs
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1: 96°F (1967)
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2: 95°F (1958)
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3: 94°F (1980)
Record Lows
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1: 30°F (1974)
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2: 35°F (2010)
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3: 36°F (1960)
Lowest Highs
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1: 59°F (1958)
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2: 57°F (2018)
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3: 57°F (1956)
Highest Lows
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1: 54°F (1998)
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2: 58°F (2021)
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3: 58°F (1960)
Highest May temperature:
103°F on 05-29-1986.
Lowest May temperature:
25°F on 05-01-1946.
Average temperature is 61.9°F
Average high is 75.4°F
Average low is 48.4°F
Temperature data from 1945 to 2022.
Record Precipitation
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1: 1.03" (1998)
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2: 0.32" (1948)
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3: 0.28" (2019)
Precipitation data from 1945 to 2022.