Great Falls, MT weather in September 1989

Temperature for September 1989

In September 1989 the average high temperature in Great Falls, MT was 72.5°F, and this was 1.4°F cooler than the average of 73.9°F. The hottest day in September 1989 was 30 September when the temperature reached 82.9°F. Overnight the average temperature in September is 42.9°F and in 1989 the average overnight temperature was 1.2°F cooler at 41.7°F.

Precipitation for September 1989

In September the average monthly rainfall in Great Falls, MT is 1.36 inches with rain usually falling on 6 days. In September 1989 there was a total of 1.37 inches of rain, that fell on 10 days.