Records for Helena Area, Montana (HLNthr) on 12-31
Record Highs
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1: 56°F (1917)
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2: 52°F (1996)
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3: 51°F (1938)
Record Lows
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1: -34°F (1968)
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2: -30°F (1923)
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3: -29°F (1941)
Lowest Highs
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1: 38°F (2013)
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2: 37°F (1917)
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3: 36°F (1938)
Highest Lows
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1: -19°F (1927)
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2: -16°F (1923)
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3: -13°F (1884)
Highest December temperature:
70°F on 12-01-2021.
Lowest December temperature:
-40°F on 12-30-1880.
Average temperature is 21.6°F
Average high is 30.9°F
Average low is 12.2°F
Temperature data from 1880 to 2022.
Record Precipitation
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1: 0.14" (1959)
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2: 0.13" (1908)
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3: 0.12" (1910)
Precipitation data from 1880 to 2022.