Records for Helena Area, Montana (HLNthr) on 09-18
Record Highs
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1: 91°F (1966)
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2: 89°F (1984)
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3: 88°F (2021)
Record Lows
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1: 19°F (1965)
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2: 23°F (1971)
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3: 27°F (1957)
Lowest Highs
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1: 62°F (2000)
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2: 60°F (1919)
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3: 59°F (2009)
Highest Lows
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1: 38°F (1947)
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2: 41°F (1957)
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3: 44°F (1983)
Highest September temperature:
102°F on 09-07-2022.
Lowest September temperature:
6°F on 09-24-1926.
Average temperature is 58.3°F
Average high is 72.5°F
Average low is 44.1°F
Temperature data from 1880 to 2022.
Record Precipitation
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1: 2.10" (1882)
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2: 1.08" (1976)
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3: 0.94" (1957)
Precipitation data from 1880 to 2022.