Records for Helena Area, Montana (HLNthr) on 05-15
Record Highs
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1: 88°F (1944)
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2: 87°F (2012)
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3: 87°F (2006)
Record Lows
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1: 26°F (1943)
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2: 26°F (1929)
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3: 28°F (1953)
Lowest Highs
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1: 55°F (1931)
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2: 53°F (2019)
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3: 53°F (1907)
Highest Lows
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1: 37°F (1955)
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2: 40°F (1910)
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3: 40°F (1899)
Highest May temperature:
95°F on 05-28-1919.
Lowest May temperature:
17°F on 05-02-1954.
Average temperature is 53.9°F
Average high is 66.4°F
Average low is 41.4°F
Temperature data from 1880 to 2022.
Record Precipitation
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1: 0.83" (1909)
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2: 0.70" (1911)
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3: 0.59" (1887)
Precipitation data from 1880 to 2022.