Records for Hillsboro Area, Oregon (HIOthr) on 05-27
Record Highs
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1: 94°F (2005)
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2: 92°F (1972)
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3: 91°F (1952)
Record Lows
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1: 33°F (1966)
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2: 33°F (1935)
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3: 34°F (1934)
Lowest Highs
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1: 60°F (1997)
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2: 58°F (1958)
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3: 56°F (1993)
Highest Lows
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1: 56°F (2006)
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2: 56°F (1980)
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3: 58°F (2011)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 58.6°F
Average high is 70.4°F
Average low is 46.7°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.63" (2006)
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2: 0.55" (2013)
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3: 0.55" (1958)
Precipitation data from 1929 to 2022.