Records for Great Falls Area, Montana (GTFthr) on 09-30
Record Highs
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1: 91°F (1992)
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2: 90°F (2011)
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3: 88°F (1963)
Record Lows
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1: 12°F (2019)
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2: 22°F (1985)
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3: 25°F (1950)
Lowest Highs
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1: 57°F (2011)
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2: 56°F (1976)
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3: 56°F (1946)
Highest Lows
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1: 31°F (2019)
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2: 33°F (1950)
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3: 36°F (2018)
Highest September temperature:
102°F on 09-03-2022.
Lowest September temperature:
10°F on 09-24-1926.
Average temperature is 53.3°F
Average high is 66°F
Average low is 40.7°F
Temperature data from 1891 to 2022.
Record Precipitation
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1: 1.34" (2022)
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2: 0.92" (1977)
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3: 0.78" (2009)
Precipitation data from 1891 to 2022.