Records for Ontario Area, Oregon (ONOthr) on 05-15
Record Highs
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1: 95°F (1973)
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2: 94°F (2006)
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3: 93°F (1988)
Record Lows
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1: 28°F (1966)
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2: 30°F (1974)
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3: 32°F (1948)
Lowest Highs
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1: 59°F (2008)
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2: 58°F (2021)
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3: 58°F (2019)
Highest Lows
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1: 51°F (1984)
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2: 58°F (2011)
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3: 58°F (1998)
Highest May temperature:
103°F on 05-29-1986.
Lowest May temperature:
25°F on 05-01-1946.
Average temperature is 60.1°F
Average high is 73.6°F
Average low is 46.6°F
Temperature data from 1945 to 2022.
Record Precipitation
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1: 0.65" (1996)
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2: 0.65" (1959)
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3: 0.47" (2011)
Precipitation data from 1945 to 2022.