Records for Great Falls Area, Montana (GTFthr) on 05-15
Record Highs
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1: 93°F (1897)
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2: 89°F (1924)
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3: 89°F (1917)
Record Lows
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1: 28°F (1929)
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2: 30°F (1955)
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3: 30°F (1923)
Lowest Highs
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1: 57°F (1936)
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2: 56°F (1949)
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3: 55°F (1972)
Highest Lows
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1: 36°F (1955)
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2: 36°F (1942)
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3: 46°F (1915)
Highest May temperature:
100°F on 05-28-1919.
Lowest May temperature:
12°F on 05-01-2009.
Average temperature is 54.3°F
Average high is 66.9°F
Average low is 41.7°F
Temperature data from 1891 to 2022.
Record Precipitation
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1: 2.75" (1902)
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2: 0.71" (1910)
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3: 0.64" (1911)
Precipitation data from 1891 to 2022.