Records for Boise Area, Idaho (BOIthr) on 09-26
Record Highs
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1: 93°F (1963)
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2: 91°F (1978)
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3: 91°F (1875)
Record Lows
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1: 28°F (1934)
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2: 30°F (1908)
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3: 31°F (1924)
Lowest Highs
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1: 61°F (2015)
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2: 61°F (1990)
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3: 60°F (1905)
Highest Lows
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1: 50°F (1923)
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2: 54°F (1986)
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3: 55°F (1929)
Highest September temperature:
104°F on 09-07-2022.
Lowest September temperature:
23°F on 09-14-1970.
Average temperature is 62.4°F
Average high is 75.6°F
Average low is 49.3°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.51" (1923)
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2: 0.50" (1990)
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3: 0.39" (1986)
Precipitation data from 1878 to 2022.