Great Falls Weather In October
The highest recorded temperature in October for Great Falls for the past 73 years was 91 degrees Fahrenheit, registered on October 3, 1943, while the mean high temperature is 58. The lowest documented temperature in October for Great Falls for the past 73 years was -10 measured on October 23, 1919, and the standard low recorded daily temperature is 33.
United States National Weather Service historical Great Falls October weather data indicates that on October 31, 1935, the measured high temperature did not exceed 8 degrees Fahrenheit, the lowest high measured in Great Falls in the past 73 years. Weather Service records additionally indicate that on October 4, 1947, the low for the day was not measured below 62 degrees, the highest low temperature recorded in Great Falls in the last 73 years.
According to the National Weather Service, the high temperature in Great Falls in October on the first day of the month averages 67 degrees and the high on the last day of the month averages 52 degrees. The low temperature in Great Falls in October on the first day of the month averages 40 degrees and the low temperature on the last day of the month averages 31 degrees.
Great Falls normally receives an average of 0.93 inches of rain during October. October Great Falls Weather records indicate that on October 21, 1908 Great Falls received 1.39 inches of precipitation, the highest amount of rain recorded in a single day in October. Great Falls receives an average of 3.4 inches of snow in October. The highest snowfall on a single day in October was 5.5 inches on October 22, 1919.