Records for Hillsboro Area, Oregon (HIOthr) on 05-10
Record Highs
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1: 87°F (2019)
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2: 87°F (1987)
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3: 86°F (2020)
Record Lows
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1: 31°F (1935)
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2: 32°F (2012)
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3: 32°F (1947)
Lowest Highs
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1: 55°F (1931)
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2: 54°F (1960)
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3: 52°F (2020)
Highest Lows
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1: 50°F (2000)
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2: 53°F (1983)
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3: 54°F (1970)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 55.7°F
Average high is 67.9°F
Average low is 43.6°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.45" (1937)
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2: 0.39" (2000)
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3: 0.39" (1995)
Precipitation data from 1929 to 2022.