United StatesAverage weather for Iowa in August
It's hot in August in Iowa with an average temperature of 33°C. Temperatures this month range from a low of 30°C to a high of 34°C. At night, you can expect temperatures between 24°C and 26°C.
Start of August
The month of August starts in Iowa with hot temps, averaging around 34°C during the day and nights around 26°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid August
By mid-August, daytime temps drop to around 33°C, with nights around 25°C. There’s a high chance of precipitation during this time. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of August
By the end of August, the average daytime temperature in Iowa is around 33°C, while nighttime temps are about 25°C. There’s a significant chance of many days with precipitation. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In August, there is an average of 328 mm of precipitation, spread over 13 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Iowa in August |
New York | ||
|---|---|---|---|
 Average temperature |
33°C | 30°C | |
 Max. temperature |
34°C | 31°C | |
| Min. temperature |
30°C | -5°C | |
 Total precipitation |
328 mm | 79 mm | |
| Rainy days |
13 days | 13 days | |
July
UV index
The UV index is a maximum of 9 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 Iowa?
Looking for sun? August isn’t a good month to be in Iowa. The temperature is nice, but there’s too much chance of rain.
The hurricane season in Iowa runs from June to November.
Temperature records
With 42°C in 2023, Iowa reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 25°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 18°C to a highest value of 29°C.
Check out the climate of Iowa for all months and discover the best travel time
Daily Temperature in August in Iowa
This chart shows the average daily high and low temperatures in August for Iowa, 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 Iowa
The chart below shows the average daily precipitation in August for Iowa, 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 13 days of precipitation in Iowa.
Daily UV index in August in Iowa
This chart shows the average daily UV index in August in Iowa, 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 Iowa over the years
This chart shows the average temperature in August in Iowa, measured in degrees Celsius, over the past few years.
Total precipitation in August in Iowa over the years
This chart shows the average precipitation in August in Iowa, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Iowa
Click on any day in August to get detailed info about the usual weather on that day in Iowa. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Iowa
Have you been to Iowa in August?
Share your weather experience in August in Iowa.
Average weather in Iowa by month
Click on a month below to see detailed weather info for Iowa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
