Polk County (Des Moines)
August
Weather in Polk County, Iowa for August 2026
Your guide to Polk County weather in August - trends and predictions
In general, the average temperature in Polk County 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.
Polk County in August brings notable rainfall, with an average of 18 rainy days and a total precipitation of 137.3 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
13
Dry days
18
Rainy days
0
Snow days
29°/17°
Temperatures
20 km/h
Avg max wind
70 %
Avg humidity
Polk County Weather August
Move between months or click on a day
Temperatures trend during August in Polk County
See the weather trend as well as the moving average line
August weather in Polk County day by day
Click on a date for more information
| 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 | |
| Next | |||||
Important Notice
Our weather forecast for Polk County 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 Polk County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Polk County in August - FAQ
What are the expected maximum and minimum temperatures in Polk County 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 Polk County during August?
Significant rainfall exceeding 137.3 mm is expected in Polk County during August, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Polk County during August?
The average wind speed in Polk County during August is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Polk County
Explore the daily rainfall trends and prepare for Polk Countys August weather 💧
Typically, Polk County has 18 rainy days in August with a total of 137.3 mm of rainfall.
UV exposure in Polk County during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
Top locations in Polk County
Select a location for an accurate weather forecast
More Locations Quick links
More Polk County weather pages
You are here
Where is Polk County?Get accurate weather forecasts for Polk County, located at latitude 41.601 and longitude -93.609. Stay updated with localized weather information tailored for Polk County.
Found a mistake?
We appreciate your attention to details. Tell us here.