Des Moines (IA)
August
Weather in Des Moines, Iowa for August 2026
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 28.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 31.7 °C by the end of August.
Des Moines in August brings notable rainfall, with an average of 18 rainy days and a total precipitation of 137.3 mm.
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Temperatures
Rain 🌧️
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13
Dry days
18
Rainy days
0
Snow days
29°/17°
Temperatures
20 km/h
Avg max wind
70 %
Avg humidity
Des Moines Weather August
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Temperatures trend during August in Des Moines
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August weather in Des Moines day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Patchy rain possible | 30° /17° | 0.6 mm | 6 | |
| Aug. 2 |  Moderate or heavy rain shower | 27° /17° | 6.1 mm | 6 | |
| Aug. 3 | Patchy rain possible | 29° /17° | 0.1 mm | 7 | |
| Aug. 4 | Moderate or heavy rain shower | 29° /18° | 2.1 mm | 7 | |
| Aug. 5 |  Overcast | 30° /19° | 0.3 mm | 6 | |
| Aug. 6 | Moderate or heavy rain shower | 27° /17° | 7.6 mm | 6 | |
| Aug. 7 | Patchy rain possible | 28° /16° | 36.7 mm | 6 | |
| Aug. 8 | Patchy rain possible | 29° /17° | 0.5 mm | 7 | |
| Aug. 9 | Moderate or heavy rain shower | 25° /17° | 2.5 mm | 6 | |
| Aug. 10 | Overcast | 28° /17° | 27.9 mm | 7 | |
| Aug. 11 | Overcast | 29° /18° | 5.6 mm | 7 | |
| Aug. 12 |  Sunny | 27° /18° | 9.9 mm | 6 | |
| Aug. 13 |  Fog | 27° /15° | 5 mm | 6 | |
| Aug. 14 | Patchy rain possible | 26° /15° | 1.2 mm | 6 | |
| Aug. 15 |  Thundery outbreaks possible | 30° /16° | 2.4 mm | 7 | |
| Aug. 16 | Sunny | 32° /18° | 0 mm | 8 | |
| Aug. 17 |  Partly cloudy | 29° /18° | 0 mm | 7 | |
| Aug. 18 | Mist | 30° /17° | 0 mm | 7 | |
| Aug. 19 | Sunny | 31° /18° | 3.7 mm | 7 | |
| Aug. 20 | Patchy rain possible | 30° /19° | 0.1 mm | 7 | |
| Aug. 21 |  Cloudy | 30° /19° | 0 mm | 7 | |
| Aug. 22 | Overcast | 32° /17° | 0 mm | 7 | |
| Aug. 23 | Cloudy | 31° /18° | 0.1 mm | 7 | |
| Aug. 24 | Partly cloudy | 31° /18° | 1 mm | 7 | |
| Aug. 25 | Mist | 33° /17° | 0.3 mm | 8 | |
| Aug. 26 | Fog | 34° /17° | 0 mm | 7 | |
| Aug. 27 | Partly cloudy | 33° /17° | 1 mm | 8 | |
| Aug. 28 | Mist | 31° /15° | 1 mm | 7 | |
| Aug. 29 | Sunny | 33° /16° | 1.5 mm | 8 | |
| Aug. 30 | Sunny | 29° /16° | 2.1 mm | 7 | |
| Aug. 31 | Sunny | 29° /14° | 17.8 mm | 7 | |
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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.
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Des Moines in August - FAQ
What are the expected maximum and minimum temperatures in Des Moines during August?
During August, expect a variety of temperatures with highs around 29° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Des Moines during August?
Significant rainfall exceeding 137.3 mm is expected in Des Moines during August, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
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.
August rainfall patterns in Des Moines
Explore the daily rainfall trends and prepare for Des Moiness August weather 💧
Typically, Des Moines has 18 rainy days in August with a total of 137.3 mm of rainfall.
UV exposure in Des Moines during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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