Great Falls, MT weather in May 1977

Temperature for May 1977

In May 1977 the average high temperature in Great Falls, MT was 65.9°F, and this was 1.0°F cooler than the average of 67.0°F. The hottest day in May 1977 was 10 May when the temperature reached 80.1°F. Overnight the average temperature in May is 39.2°F and in 1977 the average overnight temperature was 1.3°F cooler at 37.9°F.

Precipitation for May 1977

In May the average monthly rainfall in Great Falls, MT is 2.38 inches with rain usually falling on 11 days. In May 1977 there was a total of 1.90 inches of rain, that fell on 17 days.