Records for Hillsboro Area, Oregon (HIOthr) on 05-19
Record Highs
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1: 88°F (1963)
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2: 88°F (1961)
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3: 85°F (1946)
Record Lows
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1: 34°F (1941)
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2: 35°F (2003)
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3: 35°F (1937)
Lowest Highs
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1: 59°F (1958)
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2: 56°F (1968)
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3: 55°F (1993)
Highest Lows
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1: 54°F (1991)
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2: 56°F (1976)
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3: 56°F (1975)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 57.5°F
Average high is 69.6°F
Average low is 45.5°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.58" (1981)
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2: 0.48" (1998)
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3: 0.44" (1968)
Precipitation data from 1929 to 2022.