Records for Boise Area, Idaho (BOIthr) on 09-12
Record Highs
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1: 95°F (1899)
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2: 94°F (1963)
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3: 93°F (2015)
Record Lows
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1: 30°F (1889)
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2: 32°F (1970)
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3: 33°F (1890)
Lowest Highs
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1: 68°F (2011)
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2: 68°F (2001)
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3: 66°F (1959)
Highest Lows
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1: 53°F (1893)
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2: 56°F (1927)
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3: 57°F (1914)
Highest September temperature:
104°F on 09-07-2022.
Lowest September temperature:
23°F on 09-14-1970.
Average temperature is 67.7°F
Average high is 81.6°F
Average low is 53.8°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.78" (1939)
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2: 0.38" (1897)
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3: 0.29" (1903)
Precipitation data from 1878 to 2022.