The temperatures in Missoula in August are quite cold with temperatures between 7°C and 29°C, warm clothes are a must.
The wather in Missoula in August can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Missoula in August 2025.
If you’re planning to visit Missoula in the near future, we highly recommend that you review the 14 day weather forecast for Missoula before you arrive.
Temperatures
29° / 7°
Rainy Days
2
Snowy Days
0
Dry Days
29
Rainfall
15
mm
Sun Hours
10.5
Hrs