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Sioux City weather in May 2025
Expect 23°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Sioux City in May. Check more long-term weather averages for Sioux City in May before you book your next holiday to Iowa in 2025/2026.
- 2323°C max day temperature
- 9 hours of sunshine per day
- 1111 days with some rainfall
- 1010°C min night temperature
- 1515 hours of daylight per day
- 0No heat & humidity
- 9393 mm of monthly rainfall
- 77 (High) UV index
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Sioux City by month
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Recommended for Iowa
The May weather guide for Iowa (Sioux City) 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.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Sioux City in May?
Daytime temperatures usually reach 23°C in Sioux City in May, falling to 10°C at night.
How sunny is it in Sioux City in May?
There are normally 9 hours of bright sunshine each day in Sioux City in May - that's 60% of daylight hours.
Does it rain in Sioux City in May?
There are usually 11 days with some rain in Sioux City in May and the average monthly rainfall is 93mm.
Sioux City May sunrise & sunset times
Browse the sunrise and sunset times for Sioux City in May 2025. Select a month to view Sioux City sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Thursday, 1st May 2025 | 05:20 | 19:26 |
Friday, 16th May 2025 | 05:02 | 19:42 |
Saturday, 31st May 2025 | 04:51 | 19:56 |
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