Great Falls, MT Climate in October

Temperature for October

In Great Falls, MT during October the average high temperature is 60.8°F. The hottest day on record was October 1, 1992 when the temperature hit 90.0°F.

Great Falls, MT daily average and extreme temperature range for October

Low Temperature

During October the overnight temperature drops to an average of 34.9°F, with the lowest temperature of -8.0°F being recorded on October 30, 1991. On average there are 2 days in October when the temperature stays below freezing all day. In the worst October there were 6 days when the temperature did not make it above freezing. Overnight temperatures drop below freezing between 6 and 24 times in October.

Precipitation for October

In October the average monthly rainfall in Great Falls, MT is 1.00 inches with rain usually falling on between 5 and 6 days. 1987 was the driest October with only 0.02 inches of rain falling, and 1994 was the wettest October with 2.80 inches of rain. The wettest single day in October was 14 October 1975 when 0.94 inches of rain fell.

In October it usually snows on between 3 and 4 days. In October there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in October.