Typical Weather in Great Falls, MT in August

84° F Avg High

53° F Avg Low

3 Rainy Days

☀️ Temperature Summary

August is a popular time of year to visit, with an inviting climate characterized by warm temperatures. Highs in August are typically around 84°F, which is warmer than usual in Great Falls. Overnight lows will be around 53°F on average. Temperatures will usually fall as the month goes on, with daily high temperatures ranging between 86°F and 79°F.

The warm, dry temperatures in August make Great Falls a great destination to relax and soak up the sun.

High Temps Throughout the Year

☔ Rain Summary

You can expect about a 10% chance of rain for any given day in August. It's one of the drier months of the year for Great Falls, with total rainfall for the month around 1 inches.