United StatesAverage weather for Des Moines in August
It's warm in August in Des Moines with an average temperature of 26°C. Temperatures this month range from a low of 22°C to a high of 29°C. At night, you can expect temperatures between 14°C and 17°C.
Start of August
The month of August starts in Des Moines with hot temps, averaging around 28°C during the day and nights around 17°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers.
Mid August
By mid-August, daytime temps drop to around 27°C, with nights around 17°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
Since it cools down at night, it’s a good idea to wear layers.
End of August
By the end of August, the average daytime temperature in Des Moines is around 25°C, while nighttime temps are about 15°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
In August, there is an average of 23 mm of precipitation, spread over 3 days. The wind speed is around 3 Bft, mostly coming from the West.
Des Moines in August |
New York | ||
|---|---|---|---|
 Average temperature |
26°C | 30°C | |
 Max. temperature |
29°C | 31°C | |
| Min. temperature |
22°C | -5°C | |
 Total precipitation |
23 mm | 79 mm | |
| Rainy days |
3 days | 13 days | |
July
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit Des Moines?
Looking for great weather? August is a good time to be in Des Moines. The temperatures are nice, and there’s not too much rain.
Temperature records
With 36°C in 2020, Des Moines reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 17°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 10°C to a highest value of 22°C.
Check out the climate of Des Moines for all months and discover the best travel time
Daily Temperature in August in Des Moines
This chart shows the average daily high and low temperatures in August for Des Moines, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in Des Moines
The chart below shows the average daily precipitation in August for Des Moines, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect about 3 days of precipitation in Des Moines.
Daily UV index in August in Des Moines
This chart shows the average daily UV index in August in Des Moines, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Des Moines over the years
This chart shows the average temperature in August in Des Moines, measured in degrees Celsius, over the past few years.
Total precipitation in August in Des Moines over the years
This chart shows the average precipitation in August in Des Moines, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Des Moines
Click on any day in August to get detailed info about the usual weather on that day in Des Moines. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Des Moines
Have you been to Des Moines in August?
Share your weather experience in August in Des Moines.
Average weather in Des Moines by month
Click on a month below to see detailed weather info for Des Moines. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Des Moines for all months at once
