The temperatures in Des Moines in August are comfortable with low of 17°C and and high up to 28°C.
You can expect about 3 to 8 days of rain in Des Moines during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Des Moines in August 2025.
If you’re planning to visit Des Moines in the near future, we highly recommend that you review the 14 day weather forecast for Des Moines before you arrive.
Temperatures
28° / 17°
Rainy Days
7
Snowy Days
0
Dry Days
24
Rainfall
157
mm
Sun Hours
10.5
Hrs
