Records for Helena Area, Montana (HLNthr) on 05-17
Record Highs
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1: 90°F (2006)
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2: 88°F (2008)
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3: 86°F (2021)
Record Lows
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1: 26°F (1943)
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2: 28°F (1942)
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3: 28°F (1903)
Lowest Highs
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1: 58°F (1901)
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2: 57°F (1891)
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3: 55°F (1973)
Highest Lows
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1: 40°F (1903)
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2: 41°F (1977)
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3: 43°F (1971)
Highest May temperature:
95°F on 05-28-1919.
Lowest May temperature:
17°F on 05-02-1954.
Average temperature is 54.5°F
Average high is 67°F
Average low is 42°F
Temperature data from 1880 to 2022.
Record Precipitation
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1: 0.84" (2017)
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2: 0.60" (2019)
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3: 0.54" (1938)
Precipitation data from 1880 to 2022.