Records for Helena Area, Montana (HLNthr) on 09-20
Record Highs
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1: 90°F (1922)
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2: 86°F (1966)
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3: 84°F (2005)
Record Lows
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1: 20°F (1983)
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2: 22°F (1934)
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3: 25°F (1925)
Lowest Highs
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1: 59°F (1898)
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2: 56°F (1938)
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3: 56°F (1920)
Highest Lows
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1: 44°F (1971)
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2: 44°F (1968)
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3: 44°F (1941)
Highest September temperature:
102°F on 09-07-2022.
Lowest September temperature:
6°F on 09-24-1926.
Average temperature is 57.5°F
Average high is 71.6°F
Average low is 43.4°F
Temperature data from 1880 to 2022.
Record Precipitation
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1: 1.00" (1941)
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2: 0.91" (1968)
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3: 0.30" (1914)
Precipitation data from 1880 to 2022.