Temperature in Iowa in May

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

Iowa, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in May ranging from 21°C (70°F) in Mason City to 23°C (73°F) in Keokuk. Nighttime temperatures generally drop to 12°C (54°F) in Keokuk and 8°C (46°F) in Mason City.

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

To get a sense of May's typical temperatures in the key spots of Iowa, explore the map below. Click on a point for an in-depth look.

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 May

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 May: blue is cold, red is hot.

See all May weather averages, cities and regions in Iowa

Iowa temperatures in May: frequently asked questions

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

Daytime temperatures in West Des Moines typically peak at 22°C (72°F) in May, putting it in the high range.

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

After dark, West Des Moines cools to about 11°C (52°F) on an average May night.

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

Based on our systematic data collection, Keokuk has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 23°C (73°F), while at night it goes down to an approximate temperature of 12°C (54°F).

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

In our database, Mason City is the chilliest city in May in Iowa, the United States of America. Daytime temperatures typically peak at 21°C (70°F), while the nighttime lows hover around 8°C (46°F).

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

West Des Moines enjoys close to 280 hours of sunlight. This not only brightens the days but also uplifts the atmosphere during the month.

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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