Records for Hillsboro Area, Oregon (HIOthr) on 05-26
Record Highs
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1: 89°F (1947)
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2: 89°F (1936)
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3: 86°F (2005)
Record Lows
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1: 32°F (1935)
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2: 34°F (1934)
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3: 35°F (2011)
Lowest Highs
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1: 61°F (1986)
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2: 57°F (2004)
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3: 56°F (1958)
Highest Lows
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1: 54°F (2011)
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2: 58°F (2006)
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3: 58°F (1956)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 58.5°F
Average high is 70.3°F
Average low is 46.6°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.93" (1946)
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2: 0.75" (1941)
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3: 0.44" (1984)
Precipitation data from 1929 to 2022.