Records for Great Falls Area, Montana (GTFthr) on 05-17
Record Highs
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1: 87°F (2006)
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2: 85°F (1973)
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3: 85°F (1901)
Record Lows
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1: 26°F (2003)
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2: 27°F (1903)
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3: 28°F (1977)
Lowest Highs
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1: 58°F (1973)
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2: 57°F (1901)
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3: 56°F (1920)
Highest Lows
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1: 38°F (1977)
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2: 42°F (1909)
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3: 43°F (2015)
Highest May temperature:
100°F on 05-28-1919.
Lowest May temperature:
12°F on 05-01-2009.
Average temperature is 54.8°F
Average high is 67.3°F
Average low is 42.3°F
Temperature data from 1891 to 2022.
Record Precipitation
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1: 1.55" (1949)
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2: 0.65" (2017)
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3: 0.57" (1994)
Precipitation data from 1891 to 2022.