Records for Helena Area, Montana (HLNthr) on 09-17
Record Highs
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1: 90°F (1998)
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2: 89°F (2009)
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3: 86°F (2000)
Record Lows
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1: 20°F (1965)
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2: 27°F (1973)
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3: 28°F (1971)
Lowest Highs
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1: 61°F (1881)
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2: 59°F (1920)
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3: 58°F (1892)
Highest Lows
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1: 37°F (1947)
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2: 43°F (1965)
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3: 44°F (2003)
Highest September temperature:
102°F on 09-07-2022.
Lowest September temperature:
6°F on 09-24-1926.
Average temperature is 58.6°F
Average high is 72.9°F
Average low is 44.3°F
Temperature data from 1880 to 2022.
Record Precipitation
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1: 0.98" (1908)
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2: 0.86" (1988)
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3: 0.79" (1989)
Precipitation data from 1880 to 2022.