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Temperature in Iowa in May

Iowa is a region in the United States of America. May in has maximum daytime temperatures ranging from pleasant in Mason City with 21°C to high temperatures in Keokuk with 23°C. Nighttime temperatures generally drop to 12°C in Keokuk and 8°C in Mason City.

What is the temperature of the different cities in Iowa 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.

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Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

  • What is the warmest city in May in Iowa?
  • From a thorough analysis of our records, Keokuk clearly dominates in terms of high temperatures. The city witnesses daytime temperatures hovering around 23°C, and evenings that remain near 12°C.

  • What is the coldest city in May in Iowa?
  • For the month of May, Mason City is the most temperate city in Iowa based on our records. With highs averaging 21°C and nighttime temperatures dipping to around 8°C.

  • How much sun does Iowa get in May?
  • Des Moines enjoys approximately 280 hours of sunshine, offering a mostly sunny climate that adds a pleasant and vibrant feel to the month.

    Interested in more climate information?

    We have much more information about the climate in Iowa. Interested in the weather conditions in a specific month? Select the month below.

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