Records for Boise Area, Idaho (BOIthr) on 05-31
Record Highs
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1: 98°F (1910)
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2: 97°F (1986)
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3: 94°F (2015)
Record Lows
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1: 32°F (1978)
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2: 32°F (1955)
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3: 33°F (1919)
Lowest Highs
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1: 71°F (1903)
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2: 64°F (2009)
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3: 63°F (1972)
Highest Lows
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1: 49°F (1923)
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2: 53°F (1990)
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3: 57°F (1943)
Highest May temperature:
100°F on 05-29-1897.
Lowest May temperature:
22°F on 05-05-1982.
Average temperature is 63.7°F
Average high is 76.4°F
Average low is 51°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.82" (1923)
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2: 0.67" (1954)
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3: 0.57" (2005)
Precipitation data from 1878 to 2022.