Records for Hillsboro Area, Oregon (HIOthr) on 05-12
Record Highs
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1: 92°F (1949)
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2: 90°F (1936)
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3: 86°F (1971)
Record Lows
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1: 30°F (1985)
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2: 33°F (1977)
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3: 33°F (1935)
Lowest Highs
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1: 60°F (1937)
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2: 58°F (2013)
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3: 58°F (1949)
Highest Lows
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1: 54°F (2017)
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2: 55°F (2022)
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3: 55°F (1999)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 56.2°F
Average high is 68.3°F
Average low is 44.1°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.86" (1996)
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2: 0.60" (1998)
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3: 0.46" (1945)
Precipitation data from 1929 to 2022.