Great Falls, MT weather in September 1987

Temperature for September 1987

In September 1987 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 1987 was 3 September when the temperature reached 87.1°F. Overnight the average temperature in September is 42.9°F and in 1987 the average overnight temperature was 0.8°F cooler at 42.1°F.

Precipitation for September 1987

In September the average monthly rainfall in Great Falls, MT is 1.36 inches with rain usually falling on 6 days. In September 1987 there was a total of 1.44 inches of rain, that fell on 7 days.