Records for Hillsboro Area, Oregon (HIOthr) on 05-11
Record Highs
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1: 92°F (1997)
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2: 91°F (1949)
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3: 89°F (1971)
Record Lows
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1: 29°F (1985)
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2: 30°F (1942)
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3: 32°F (1959)
Lowest Highs
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1: 57°F (1941)
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2: 56°F (1997)
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3: 55°F (2013)
Highest Lows
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1: 52°F (1986)
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2: 53°F (2011)
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3: 53°F (1956)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 56°F
Average high is 68.1°F
Average low is 43.8°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.98" (1957)
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2: 0.48" (1956)
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3: 0.47" (2017)
Precipitation data from 1929 to 2022.