Great Falls, MT weather in May 1989

Temperature for May 1989

In May 1989 the average high temperature in Great Falls, MT was 65.2°F, and this was 1.7°F cooler than the average of 67.0°F. The hottest day in May 1989 was 11 May when the temperature reached 79.0°F. Overnight the average temperature in May is 39.2°F and in 1989 the average overnight temperature was 1.1°F cooler at 38.1°F.

Precipitation for May 1989

In May the average monthly rainfall in Great Falls, MT is 2.38 inches with rain usually falling on 11 days. In May 1989 there was a total of 2.56 inches of rain, that fell on 20 days.