Iowa weather in May 2025

Expect 23°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Iowa in May. Check more long-term weather averages for Iowa in May before you book your next holiday to Iowa in 2025/2026.

  • 23°C maximum daytime temperature in May in Iowa (Des Moines)23
    23°C max day temperature
  • 9 hours of sunshine per day
  • 12 days with some rainfall in May in Iowa (Des Moines)12
    12 days with some rainfall
  • 10°C minimum night-time temperature in May in Iowa (Des Moines)10
    10°C min night temperature
  • 15 hours of daylight per day in May in Iowa (Des Moines)15
    15 hours of daylight per day
  • No heat & humidity in May in Iowa (Des Moines)0
    No heat & humidity
  • 98 mm monthly rainfall in May in Iowa (Des Moines)98
    98 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Iowa (Des Moines)8
    8 (Very High) UV index

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The May weather guide for Iowa (Des Moines) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Iowa destinations

Below are average maximum temperatures at popular countries, regions and places in Iowa in May. Select a holiday destination to see more weather parameters.

All Iowa destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Iowa in May?

Daytime temperatures usually reach 23°C in Des Moines, Iowa in May, falling to 10°C at night.

How sunny is it in Iowa in May?

There are normally 9 hours of bright sunshine each day in Des Moines, Iowa in May - that's 61% of daylight hours.

Does it rain in Iowa in May?

There are usually 12 days with some rain in Des Moines, Iowa in May and the average monthly rainfall is 98mm.

Iowa May sunrise & sunset times

Browse the sunrise and sunset times for Iowa in May 2025. Select a month to view Iowa sunrise and sunset times for the next 12 months. The Iowa sunrise and sunset times shown below are for Des Moines.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:11 19:13
Friday, 16th May 2025 04:54 19:29
Saturday, 31st May 2025 04:43 19:42

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