Records for Boise Area, Idaho (BOIthr) on 09-22
Record Highs
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1: 99°F (1966)
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2: 95°F (1992)
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3: 92°F (1906)
Record Lows
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1: 29°F (1895)
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2: 31°F (1993)
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3: 31°F (1991)
Lowest Highs
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1: 62°F (1963)
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2: 61°F (2014)
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3: 61°F (1938)
Highest Lows
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1: 51°F (1913)
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2: 52°F (2017)
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3: 54°F (1945)
Highest September temperature:
104°F on 09-07-2022.
Lowest September temperature:
23°F on 09-14-1970.
Average temperature is 64.1°F
Average high is 77.4°F
Average low is 50.7°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.51" (1917)
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2: 0.42" (1930)
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3: 0.31" (1918)
Precipitation data from 1878 to 2022.