Records for Hillsboro Area, Oregon (HIOthr) on 05-23
Record Highs
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1: 89°F (1947)
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2: 88°F (1999)
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3: 88°F (1938)
Record Lows
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1: 32°F (1964)
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2: 33°F (1966)
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3: 33°F (1935)
Lowest Highs
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1: 59°F (1941)
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2: 58°F (1958)
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3: 57°F (1956)
Highest Lows
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1: 52°F (2013)
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2: 53°F (1953)
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3: 54°F (1984)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 58.1°F
Average high is 70°F
Average low is 46.2°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.82" (1945)
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2: 0.69" (2013)
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3: 0.67" (1990)
Precipitation data from 1929 to 2022.