Records for Boise Area, Idaho (BOIthr) on 09-05
Record Highs
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1: 100°F (2020)
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2: 100°F (1963)
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3: 99°F (2019)
Record Lows
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1: 34°F (1887)
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2: 34°F (1886)
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3: 36°F (1969)
Lowest Highs
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1: 76°F (1998)
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2: 70°F (2019)
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3: 69°F (1990)
Highest Lows
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1: 58°F (1884)
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2: 62°F (1886)
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3: 63°F (2015)
Highest September temperature:
104°F on 09-07-2022.
Lowest September temperature:
23°F on 09-14-1970.
Average temperature is 70°F
Average high is 84.2°F
Average low is 55.7°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.89" (1900)
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2: 0.46" (1972)
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3: 0.34" (1925)
Precipitation data from 1878 to 2022.