Records for Hillsboro Area, Oregon (HIOthr) on 05-17
Record Highs
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1: 97°F (1956)
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2: 92°F (2008)
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3: 91°F (1958)
Record Lows
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1: 32°F (1966)
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2: 33°F (1950)
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3: 34°F (1943)
Lowest Highs
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1: 55°F (2008)
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2: 55°F (1937)
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3: 53°F (2010)
Highest Lows
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1: 54°F (1960)
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2: 54°F (1933)
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3: 55°F (2003)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 57.2°F
Average high is 69.3°F
Average low is 45.1°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.62" (1960)
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2: 0.59" (1991)
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3: 0.46" (1972)
Precipitation data from 1929 to 2022.