Records for Great Falls Area, Montana (GTFthr) on 09-18
Record Highs
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1: 93°F (1981)
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2: 92°F (1966)
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3: 91°F (1984)
Record Lows
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1: 23°F (1965)
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2: 29°F (1991)
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3: 29°F (1957)
Lowest Highs
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1: 62°F (1966)
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2: 61°F (1920)
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3: 56°F (2014)
Highest Lows
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1: 32°F (1947)
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2: 40°F (1988)
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3: 41°F (1983)
Highest September temperature:
102°F on 09-03-2022.
Lowest September temperature:
10°F on 09-24-1926.
Average temperature is 57.7°F
Average high is 71.5°F
Average low is 43.9°F
Temperature data from 1891 to 2022.
Record Precipitation
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1: 0.82" (1947)
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2: 0.63" (1957)
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3: 0.61" (1983)
Precipitation data from 1891 to 2022.