Des Moines

Iowa Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Iowa, the United States of America in August.

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West Des Moines Ames Urbandale Ankeny

Planning a journey to Iowa, the United States of America this August and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Iowa in August

Iowa, the United States of America is a region in the United States of America. August in Iowa generally has warm temperatures, with precipitation levels ranging from moderate to high. The month of August is in the summer season.

Temperatures

The average maximum temperatures are warm and range 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.

For specific regional insights in Iowa, the United States of America, refer to the map provided below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Keokuk with an average of 82 mm (3.2 in) to high rainfall in Creston with 158 mm (6.2 in).

Average sunshine

Most destinations offer generous amounts of sunshine this August. For example, West Des Moines gets approximately 299 hours of sunlight, perfect for anyone wanting bright, sunny days.

Explore Iowa by month

Pick a month to see the average temperature, rainfall and sunshine in Iowa — and find the best time to visit. (based on West Des Moines)

January-1°C (30°F) February0°C (32°F) March10°C (50°F) April17°C (63°F) May22°C (72°F) June28°C (82°F) This monthJuly30°C (86°F) August29°C (84°F) September25°C (77°F) October18°C (64°F) November10°C (50°F) December2°C (36°F)
Best Time to Visit Iowa →

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
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Iowa

What is the weather like in August for some of the most popular destinations in Iowa, the United States of America?

Temperature range in Iowa (August)

Precipitation variation in Iowa (August)

West Des Moines

In August West Des Moines generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 18°C (64°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
29°C (84°F)
25°C (77°F)
Min temperature
19°C (66°F)
18°C (64°F)
13°C (55°F)
Monthly sun hours
335 hours
299 hours
240 hours
Monthly rainfall
101 mm (4 in)
116 mm (4.6 in)
80 mm (3.1 in)
Monthly rainy days
9 days
11 days
9 days
Weather conditions
tolerable
pleasant
perfect
Climate in West Des Moines →

Ames

In August Ames generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 16°C (61°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« July
August
September »
July
August
September
Max temperature
29°C (84°F)
28°C (82°F)
25°C (77°F)
Min temperature
17°C (63°F)
16°C (61°F)
11°C (52°F)
Monthly sun hours
335 hours
299 hours
240 hours
Monthly rainfall
113 mm (4.4 in)
137 mm (5.4 in)
106 mm (4.2 in)
Monthly rainy days
10 days
10 days
10 days
Weather conditions
pleasant
pleasant
pleasant
Climate in Ames →

Urbandale

In August Urbandale generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 18°C (64°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
29°C (84°F)
25°C (77°F)
Min temperature
19°C (66°F)
18°C (64°F)
13°C (55°F)
Monthly sun hours
335 hours
299 hours
240 hours
Monthly rainfall
109 mm (4.3 in)
130 mm (5.1 in)
92 mm (3.6 in)
Monthly rainy days
9 days
11 days
9 days
Weather conditions
tolerable
pleasant
perfect
Climate in Urbandale →

Ankeny

In August Ankeny generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 17°C (63°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
29°C (84°F)
25°C (77°F)
Min temperature
18°C (64°F)
17°C (63°F)
12°C (54°F)
Monthly sun hours
335 hours
299 hours
240 hours
Monthly rainfall
116 mm (4.6 in)
124 mm (4.9 in)
94 mm (3.7 in)
Monthly rainy days
10 days
11 days
9 days
Weather conditions
tolerable
pleasant
perfect
Climate in Ankeny →

Clive

In August Clive generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 18°C (64°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
29°C (84°F)
25°C (77°F)
Min temperature
19°C (66°F)
18°C (64°F)
13°C (55°F)
Monthly sun hours
335 hours
299 hours
240 hours
Monthly rainfall
108 mm (4.3 in)
125 mm (4.9 in)
89 mm (3.5 in)
Monthly rainy days
10 days
11 days
9 days
Weather conditions
tolerable
pleasant
perfect
Climate in Clive →

Is your destination not in the list? Have a look at all destinations in Iowa, in the United States of America.

Popular cities in August

Day & night temperatures, rainfall and average weather in Iowa in August.

City Weather Day temp Night temp Rainfall
West Des Moines 29°C (84°F) 18°C (64°F) 116 mm (4.6 in)
Ames 28°C (82°F) 16°C (61°F) 137 mm (5.4 in)
Urbandale 29°C (84°F) 18°C (64°F) 130 mm (5.1 in)
Ankeny 29°C (84°F) 17°C (63°F) 124 mm (4.9 in)
Clive 29°C (84°F) 18°C (64°F) 125 mm (4.9 in)
Cedar Falls 28°C (82°F) 16°C (61°F) 104 mm (4.1 in)

Iowa weather in August: frequently asked questions

What is the weather like in Iowa, the United States of America in August?

August in Iowa, the United States of America brings pleasant weather. In West Des Moines, daytime temperatures are typically around 29°C (84°F) and nighttime lows hover near 18°C (64°F).

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

In West Des Moines, the average daytime high in August is 29°C (84°F), while nighttime temperatures drop to around 18°C (64°F).

Does Iowa, the United States of America get a lot of rain in August?

Iowa, the United States of America sees substantial rainfall in August. West Des Moines typically averages about 116 mm (4.6 in), a mix of wet and dry days, but bring an umbrella.

Is August a Good Time to Visit Iowa, the United States of America?

Given the typically pleasant weather conditions in West Des Moines, August might be a good time to visit Iowa, the United States of America.

On average, the best time to visit Iowa, the United States of America is in September with generally perfect weather in West Des Moines. On the other hand, the months of January, February, March, November and December tend to have poor weather conditions.

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.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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