Records for Boise Area, Idaho (BOIthr) on 09-15
Record Highs
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1: 96°F (1888)
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2: 94°F (2002)
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3: 94°F (1998)
Record Lows
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1: 34°F (1936)
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2: 35°F (1895)
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3: 35°F (1889)
Lowest Highs
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1: 64°F (2013)
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2: 63°F (1953)
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3: 63°F (1908)
Highest Lows
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1: 54°F (1982)
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2: 55°F (1914)
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3: 60°F (1959)
Highest September temperature:
104°F on 09-07-2022.
Lowest September temperature:
23°F on 09-14-1970.
Average temperature is 66.7°F
Average high is 80.4°F
Average low is 52.9°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.42" (1996)
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2: 0.25" (1976)
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3: 0.22" (1910)
Precipitation data from 1878 to 2022.