Great Falls, MT weather in September 2010

Temperature for September 2010

In September 2010 the average high temperature in Great Falls, MT was 70.2°F, and this was 3.7°F cooler than the average of 73.9°F. The hottest day in September 2010 was 28 September when the temperature reached 86.0°F. Overnight the average temperature in September is 42.9°F and in 2010 the average overnight temperature was 0.6°F warmer at 43.5°F.

Precipitation for September 2010

In September the average monthly rainfall in Great Falls, MT is 1.36 inches with rain usually falling on 6 days. In September 2010 there was a total of 2.36 inches of rain, that fell on 0 days.