Records for Boise Area, Idaho (BOIthr) on 12-21
Record Highs
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1: 60°F (1964)
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2: 59°F (1969)
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3: 58°F (2020)
Record Lows
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1: -23°F (1990)
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2: -8°F (1983)
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3: -3°F (1985)
Lowest Highs
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1: 46°F (1972)
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2: 45°F (1955)
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3: 45°F (1933)
Highest Lows
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1: -3°F (1990)
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2: 13°F (1998)
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3: 13°F (1985)
Highest December temperature:
70°F on 12-10-1939.
Lowest December temperature:
-25°F on 12-22-1990.
Average temperature is 31.1°F
Average high is 37.7°F
Average low is 24.5°F
Temperature data from 1875 to 2022.
Record Precipitation
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1: 0.76" (2014)
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2: 0.43" (1882)
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3: 0.34" (1925)
Precipitation data from 1878 to 2022.