Temperature in Iowa in August

Daytime highs, nighttime lows and the warmest cities in Iowa, the United States of America this August.

Iowa, the United States of America, a region in the United States of America, experiences high average maximum daytime temperatures in August, ranging from 27°C (81°F) in Mason City to 30°C (86°F) in Keokuk. Nighttime temperatures generally drop to 19°C (66°F) in Keokuk and 15°C (59°F) in Mason City. During August, summer is in full swing.

What is the temperature of the different cities in Iowa, the United States of America in August?

Find the average daytime temperatures in August for the most popular destinations in Iowa on the map below. Click on a destination dot for more detailed information.

Select a Month

Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Iowa, check out our Iowa's climate page.

See also: Iowa weather by month.

Best Places to Visit in Iowa in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Iowa.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in August: blue is cold, red is hot.

See all August weather averages, cities and regions in Iowa

Iowa temperatures in August: frequently asked questions

How hot does it get in Iowa, the United States of America in August?

Expect daytime temperatures around 29°C (84°F) in West Des Moines. That makes August a high month for Iowa, the United States of America.

How cold does it get at night in Iowa, the United States of America in August?

Average overnight lows in Iowa, the United States of America during August sit near 18°C (64°F) in West Des Moines.

What is the warmest city in August in Iowa, the United States of America?

According to our recent database analysis, Keokuk is the warmest city. It experiences an average maximum daytime temperature of approximately 30°C (86°F) and rarely drops below 19°C (66°F) during the night.

What is the coldest city in August in Iowa, the United States of America?

According to our data, Mason City holds the title for the coldest city in Iowa, the United States of America in August. It experiences maximum temperatures of approximately 27°C (81°F) and drops to lows of about 15°C (59°F) during the night.

How much sun does Iowa, the United States of America get in August?

West Des Moines usually sees around 299 hours of sunlight, indicating many sunny days.

Interested in more climate information?

We have much more information about the climate in Iowa.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

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