Great Falls, MT Climate in August

Temperature for August

In Great Falls, MT during August the average high temperature is 84.4°F. The hottest day on record was August 7, 1983 when the temperature hit 104.0°F.

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

Low Temperature

During August the overnight temperature drops to an average of 50.8°F, with the lowest temperature of 30.9°F being recorded on August 24, 1992. Overnight temperatures drop below freezing 3 times in August.

Precipitation for August

In August the average monthly rainfall in Great Falls, MT is 2.23 inches with rain usually falling on between 9 and 10 days. 2000 was the driest August with only 0.11 inches of rain falling, and 1984 was the wettest August with 14.36 inches of rain. The wettest single day in August was 22 August 1983 when 10.93 inches of rain fell.

In August it usually snows on between 0 and 1 days. Tornados are reported on 0 and 1 days in August. There are thunderstorms on between 4 and 5 days in August.