Records for Helena Area, Montana (HLNthr) on 12-21
Record Highs
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1: 60°F (1933)
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2: 56°F (2019)
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3: 53°F (1974)
Record Lows
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1: -32°F (1990)
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2: -28°F (1983)
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3: -26°F (1967)
Lowest Highs
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1: 49°F (1933)
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2: 39°F (1915)
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3: 35°F (2019)
Highest Lows
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1: -16°F (1990)
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2: -16°F (1983)
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3: -13°F (2022)
Highest December temperature:
70°F on 12-01-2021.
Lowest December temperature:
-40°F on 12-30-1880.
Average temperature is 22°F
Average high is 31.3°F
Average low is 12.8°F
Temperature data from 1880 to 2022.
Record Precipitation
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1: 0.35" (1937)
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2: 0.31" (1900)
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3: 0.19" (1945)
Precipitation data from 1880 to 2022.