Records for Ontario Area, Oregon (ONOthr) on 05-18
Record Highs
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1: 96°F (2008)
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2: 96°F (1973)
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3: 94°F (2009)
Record Lows
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1: 27°F (1989)
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2: 30°F (1974)
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3: 31°F (1971)
Lowest Highs
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1: 65°F (1973)
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2: 61°F (1992)
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3: 60°F (2008)
Highest Lows
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1: 59°F (1991)
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2: 59°F (1977)
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3: 59°F (1974)
Highest May temperature:
103°F on 05-29-1986.
Lowest May temperature:
25°F on 05-01-1946.
Average temperature is 61°F
Average high is 74.5°F
Average low is 47.5°F
Temperature data from 1945 to 2022.
Record Precipitation
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1: 0.52" (2005)
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2: 0.51" (1957)
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3: 0.41" (1996)
Precipitation data from 1945 to 2022.