Records for Helena Area, Montana (HLNthr) on 12-18
Record Highs
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1: 59°F (1917)
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2: 56°F (1966)
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3: 54°F (1931)
Record Lows
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1: -30°F (1924)
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2: -21°F (1983)
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3: -21°F (1964)
Lowest Highs
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1: 41°F (1933)
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2: 40°F (1917)
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3: 37°F (1936)
Highest Lows
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1: -16°F (1924)
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2: -3°F (1955)
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3: 2°F (1983)
Highest December temperature:
70°F on 12-01-2021.
Lowest December temperature:
-40°F on 12-30-1880.
Average temperature is 22.5°F
Average high is 31.6°F
Average low is 13.3°F
Temperature data from 1880 to 2022.
Record Precipitation
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1: 0.50" (1884)
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2: 0.32" (1883)
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3: 0.27" (1990)
Precipitation data from 1880 to 2022.