Great Falls, MT weather in May 1990

Temperature for May 1990

In May 1990 the average high temperature in Great Falls, MT was 63.3°F, and this was 3.7°F cooler than the average of 67.0°F. The hottest day in May 1990 was 6 May when the temperature reached 78.1°F. Overnight the average temperature in May is 39.2°F and in 1990 the average overnight temperature was 3.4°F cooler at 35.8°F.

Precipitation for May 1990

In May the average monthly rainfall in Great Falls, MT is 2.38 inches with rain usually falling on 11 days. In May 1990 there was a total of 4.05 inches of rain, that fell on 18 days.