Records for Hillsboro Area, Oregon (HIOthr) on 05-28
Record Highs
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1: 95°F (1972)
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2: 95°F (1944)
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3: 92°F (2020)
Record Lows
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1: 34°F (1979)
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2: 34°F (1976)
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3: 34°F (1950)
Lowest Highs
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1: 62°F (1997)
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2: 56°F (2002)
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3: 56°F (1998)
Highest Lows
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1: 55°F (1976)
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2: 57°F (2010)
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3: 58°F (1941)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 58.7°F
Average high is 70.5°F
Average low is 46.9°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.87" (1993)
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2: 0.55" (2022)
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3: 0.54" (1997)
Precipitation data from 1929 to 2022.