Records for Boise Area, Idaho (BOIthr) on 09-04
Record Highs
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1: 102°F (2020)
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2: 100°F (1924)
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3: 99°F (1998)
Record Lows
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1: 33°F (1887)
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2: 34°F (1892)
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3: 35°F (1889)
Lowest Highs
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1: 67°F (2017)
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2: 67°F (1998)
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3: 67°F (1924)
Highest Lows
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1: 50°F (1912)
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2: 62°F (1884)
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3: 65°F (2016)
Highest September temperature:
104°F on 09-07-2022.
Lowest September temperature:
23°F on 09-14-1970.
Average temperature is 70.3°F
Average high is 84.6°F
Average low is 56°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.60" (1884)
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2: 0.32" (1912)
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3: 0.24" (1937)
Precipitation data from 1878 to 2022.