Records for Boise Area, Idaho (BOIthr) on 12-18
Record Highs
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1: 58°F (1917)
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2: 56°F (1933)
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3: 56°F (1885)
Record Lows
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1: -5°F (1924)
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2: -3°F (1985)
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3: -1°F (1984)
Lowest Highs
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1: 47°F (1917)
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2: 39°F (1933)
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3: 38°F (2018)
Highest Lows
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1: 8°F (1924)
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2: 17°F (2016)
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3: 17°F (1985)
Highest December temperature:
70°F on 12-10-1939.
Lowest December temperature:
-25°F on 12-22-1990.
Average temperature is 31.4°F
Average high is 38°F
Average low is 24.8°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.64" (1884)
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2: 0.49" (1913)
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3: 0.46" (1941)
Precipitation data from 1878 to 2022.