Records for Great Falls Area, Montana (GTFthr) on 05-31
Record Highs
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1: 90°F (1972)
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2: 90°F (1936)
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3: 87°F (2017)
Record Lows
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1: 28°F (1917)
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2: 30°F (1982)
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3: 31°F (1951)
Lowest Highs
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1: 66°F (1936)
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2: 59°F (1986)
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3: 57°F (1997)
Highest Lows
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1: 40°F (1951)
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2: 46°F (2000)
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3: 47°F (1978)
Highest May temperature:
100°F on 05-28-1919.
Lowest May temperature:
12°F on 05-01-2009.
Average temperature is 58.2°F
Average high is 70.2°F
Average low is 46.2°F
Temperature data from 1891 to 2022.
Record Precipitation
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1: 1.20" (2000)
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2: 0.87" (2018)
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3: 0.83" (1897)
Precipitation data from 1891 to 2022.