Great Falls, MT weather in September 1980

Temperature for September 1980

In September 1980 the average high temperature in Great Falls, MT was 74.4°F, and this was 0.6°F warmer than the average of 73.9°F. The hottest day in September 1980 was 7 September when the temperature reached 98.1°F. Overnight the average temperature in September is 42.9°F and in 1980 the average overnight temperature was 1.1°F warmer at 44.0°F.

Precipitation for September 1980

In September the average monthly rainfall in Great Falls, MT is 1.36 inches with rain usually falling on 6 days. In September 1980 there was a total of 1.23 inches of rain, that fell on 11 days.