Records for Hillsboro Area, Oregon (HIOthr) on 05-25
Record Highs
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1: 93°F (1936)
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2: 92°F (1992)
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3: 89°F (1947)
Record Lows
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1: 31°F (1935)
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2: 33°F (1975)
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3: 33°F (1964)
Lowest Highs
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1: 58°F (1986)
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2: 54°F (2022)
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3: 54°F (1993)
Highest Lows
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1: 56°F (2019)
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2: 56°F (1962)
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3: 57°F (2011)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 58.4°F
Average high is 70.2°F
Average low is 46.5°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.53" (1968)
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2: 0.42" (1993)
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3: 0.34" (2011)
Precipitation data from 1929 to 2022.