Records for Hillsboro Area, Oregon (HIOthr) on 05-14
Record Highs
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1: 92°F (1939)
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2: 89°F (2014)
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3: 88°F (2018)
Record Lows
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1: 30°F (1964)
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2: 32°F (1965)
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3: 34°F (1986)
Lowest Highs
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1: 64°F (1938)
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2: 59°F (1997)
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3: 56°F (2005)
Highest Lows
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1: 54°F (1978)
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2: 55°F (2001)
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3: 55°F (1966)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 56.6°F
Average high is 68.7°F
Average low is 44.5°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 0.97" (1936)
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2: 0.71" (1959)
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3: 0.61" (1955)
Precipitation data from 1929 to 2022.