Records for Boise Area, Idaho (BOIthr) on 09-23
Record Highs
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1: 94°F (1987)
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2: 92°F (2011)
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3: 92°F (1938)
Record Lows
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1: 29°F (1984)
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2: 31°F (1926)
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3: 33°F (1993)
Lowest Highs
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1: 63°F (2014)
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2: 61°F (1992)
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3: 61°F (1938)
Highest Lows
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1: 52°F (1984)
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2: 52°F (1931)
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3: 52°F (1926)
Highest September temperature:
104°F on 09-07-2022.
Lowest September temperature:
23°F on 09-14-1970.
Average temperature is 63.7°F
Average high is 77°F
Average low is 50.4°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 1.06" (1918)
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2: 0.68" (1917)
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3: 0.35" (2007)
Precipitation data from 1878 to 2022.