Records for Boise Area, Idaho (BOIthr) on 05-09
Record Highs
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1: 92°F (1876)
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2: 88°F (1900)
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3: 87°F (1987)
Record Lows
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1: 28°F (1922)
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2: 29°F (1999)
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3: 32°F (1950)
Lowest Highs
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1: 60°F (1884)
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2: 57°F (1966)
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3: 56°F (2018)
Highest Lows
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1: 44°F (2022)
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2: 47°F (1908)
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3: 49°F (1983)
Highest May temperature:
100°F on 05-29-1897.
Lowest May temperature:
22°F on 05-05-1982.
Average temperature is 58°F
Average high is 70.3°F
Average low is 45.7°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.72" (1880)
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2: 0.47" (1920)
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3: 0.45" (2005)
Precipitation data from 1878 to 2022.