Records for Boise Area, Idaho (BOIthr) on 09-01
Record Highs
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1: 102°F (1945)
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2: 101°F (1987)
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3: 100°F (1976)
Record Lows
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1: 39°F (1892)
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2: 40°F (1889)
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3: 41°F (1977)
Lowest Highs
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1: 70°F (1893)
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2: 67°F (1916)
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3: 66°F (2009)
Highest Lows
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1: 54°F (1964)
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2: 67°F (1898)
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3: 67°F (1881)
Highest September temperature:
104°F on 09-07-2022.
Lowest September temperature:
23°F on 09-14-1970.
Average temperature is 71.2°F
Average high is 85.6°F
Average low is 56.8°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.65" (1964)
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2: 0.24" (1915)
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3: 0.20" (1961)
Precipitation data from 1878 to 2022.