Records for Hillsboro Area, Oregon (HIOthr) on 05-13
Record Highs
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1: 92°F (1973)
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2: 91°F (1939)
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3: 89°F (1949)
Record Lows
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1: 32°F (2022)
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2: 32°F (1974)
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3: 32°F (1970)
Lowest Highs
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1: 58°F (1938)
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2: 56°F (1937)
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3: 55°F (1997)
Highest Lows
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1: 52°F (2009)
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2: 54°F (1999)
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3: 55°F (2022)
Highest May temperature:
100°F on 05-29-1983.
Lowest May temperature:
26°F on 05-08-1935.
Average temperature is 56.4°F
Average high is 68.5°F
Average low is 44.3°F
Temperature data from 1929 to 2022.
Record Precipitation
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1: 1.17" (1978)
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2: 0.66" (1988)
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3: 0.60" (1996)
Precipitation data from 1929 to 2022.