Great Falls, MT weather in May 1978

Temperature for May 1978

In May 1978 the average high temperature in Great Falls, MT was 64.3°F, and this was 2.7°F cooler than the average of 67.0°F. The hottest day in May 1978 was 15 May when the temperature reached 81.0°F. Overnight the average temperature in May is 39.2°F and in 1978 the average overnight temperature was 0.0°F cooler at 39.2°F.

Precipitation for May 1978

In May the average monthly rainfall in Great Falls, MT is 2.38 inches with rain usually falling on 11 days. In May 1978 there was a total of 2.90 inches of rain, that fell on 22 days.