Des Moines
August
Weather in Des Moines for August 2025
Your guide to Des Moines weather in August - trends and predictions
In general, the average temperature in Des Moines at the beginning of August is 29 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 35.1 °F by the end of August.
The climate of Des Moines in August is notably wet, with an average of 11 rainy days.
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20
Dry days
11
Rainy days
0
Snow days
32°/18°
Temperatures
20 km/h
Avg max wind
62 %
Avg humidity
Des Moines in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  31° | 2  28° | 3 30° | ||||
| 4 31° | 5  31° | 6 26° | 7 26° | 8 25° | 9 23° | 10 28° |
| 11 30° | 12  25° | 13 27° | 14 25° | 15 28° | 16 29° | 17  26° |
| 18 27° | 19 32° | 20 30° | 21  31° | 22 34° | 23 34° | 24 35° |
| 25  40° | 26 39° | 27 36° | 28 33° | 29 35° | 30 31° | 31 32° |
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Temperatures trend during August in Des Moines
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Patchy rain possible | 31° /19° | 0.8 mm | 7 | |
| Aug. 2 | Moderate or heavy rain shower | 28° /19° | 9.2 mm | 7 | |
| Aug. 3 | Patchy rain possible | 30° /20° | 0.1 mm | 7 | |
| Aug. 4 | Moderate or heavy rain shower | 31° /20° | 3.2 mm | 7 | |
| Aug. 5 | Overcast | 31° /20° | 0.5 mm | 7 | |
| Aug. 6 | Moderate or heavy rain shower | 26° /17° | 11.4 mm | 6 | |
| Aug. 7 | Patchy rain possible | 26° /14° | 1.6 mm | 6 | |
| Aug. 8 | Patchy rain possible | 25° /15° | 0.8 mm | 6 | |
| Aug. 9 | Moderate or heavy rain shower | 23° /13° | 3.7 mm | 6 | |
| Aug. 10 | Overcast | 28° /13° | 0 mm | 7 | |
| Aug. 11 | Overcast | 30° /17° | 4 mm | 7 | |
| Aug. 12 | Sunny | 25° /17° | 5.2 mm | 6 | |
| Aug. 13 | Patchy rain possible | 27° /15° | 7.6 mm | 6 | |
| Aug. 14 | Patchy rain possible | 25° /15° | 1.8 mm | 6 | |
| Aug. 15 | Overcast | 28° /15° | 3.6 mm | 7 | |
| Aug. 16 | Sunny | 29° /15° | 0 mm | 7 | |
| Aug. 17 | Partly cloudy | 26° /16° | 0 mm | 6 | |
| Aug. 18 | Partly cloudy | 27° /14° | 0 mm | 7 | |
| Aug. 19 | Sunny | 32° /16° | 0 mm | 8 | |
| Aug. 20 | Patchy rain possible | 30° /19° | 0.1 mm | 7 | |
| Aug. 21 | Cloudy | 31° /18° | 0 mm | 7 | |
| Aug. 22 | Overcast | 34° /18° | 0 mm | 8 | |
| Aug. 23 | Cloudy | 34° /20° | 0.2 mm | 8 | |
| Aug. 24 | Partly cloudy | 35° /22° | 1.5 mm | 8 | |
| Aug. 25 | Mist | 40° /22° | 0.5 mm | 9 | |
| Aug. 26 | Fog | 39° /23° | 0 mm | 9 | |
| Aug. 27 | Partly cloudy | 36° /18° | 1.5 mm | 8 | |
| Aug. 28 | Mist | 33° /17° | 1.6 mm | 7 | |
| Aug. 29 | Sunny | 35° /18° | 2.3 mm | 9 | |
| Aug. 30 | Sunny | 31° /15° | 3.1 mm | 7 | |
| Aug. 31 | Sunny | 32° /12° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Des Moines in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Des Moines forecast closer to your planned date for the most up-to-date weather information.
Des Moines in August - FAQ
What are the expected maximum and minimum temperatures in Des Moines during August?
Expect warm days with temperatures around 32°, cooling to mild conditions of 18° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Des Moines during August?
Moderate rainfall is anticipated in Des Moines during August, with a total of 83.4 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Des Moines during August?
The average wind speed in Des Moines during August is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
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