Great Falls, MT weather in September 2009

Temperature for September 2009

In September 2009 the average high temperature in Great Falls, MT was 83.4°F, and this was 9.5°F warmer than the average of 73.9°F. The hottest day in September 2009 was 3 September when the temperature reached 93.9°F. Overnight the average temperature in September is 42.9°F and in 2009 the average overnight temperature was 5.5°F warmer at 48.4°F.

Precipitation for September 2009

In September the average monthly rainfall in Great Falls, MT is 1.36 inches with rain usually falling on 6 days. In September 2009 there was a total of 0.61 inches of rain, that fell on 0 days.