Great Falls, MT weather in September 1988

Temperature for September 1988

In September 1988 the average high temperature in Great Falls, MT was 72.6°F, and this was 1.3°F cooler than the average of 73.9°F. The hottest day in September 1988 was 5 September when the temperature reached 90.0°F. Overnight the average temperature in September is 42.9°F and in 1988 the average overnight temperature was 1.3°F cooler at 41.6°F.

Precipitation for September 1988

In September the average monthly rainfall in Great Falls, MT is 1.36 inches with rain usually falling on 6 days. In September 1988 there was a total of 2.33 inches of rain, that fell on 10 days.