Great Falls, MT weather in September 1981

Temperature for September 1981

In September 1981 the average high temperature in Great Falls, MT was 77.1°F, and this was 3.3°F warmer than the average of 73.9°F. The hottest day in September 1981 was 19 September when the temperature reached 93.0°F. Overnight the average temperature in September is 42.9°F and in 1981 the average overnight temperature was 0.6°F warmer at 43.5°F.

Precipitation for September 1981

In September the average monthly rainfall in Great Falls, MT is 1.36 inches with rain usually falling on 6 days. In September 1981 there was a total of 0.40 inches of rain, that fell on 8 days.