Sioux City weather in July 2025

Expect 88°F daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Sioux City in July. Check more long-term weather averages for Sioux City in July before you book your next holiday to Iowa in 2025/2026.

  • 88°F maximum daytime temperature in July in Sioux City88
    88°F max day temperature
  • 11 hours of sunshine per day
  • 9 days with some rainfall in July in Sioux City9
    9 days with some rainfall
  • 64°F minimum night-time temperature in July in Sioux City64
    64°F min night temperature
  • 15 hours of daylight per day in July in Sioux City15
    15 hours of daylight per day
  • High heat & humidity in July in Sioux CityH
    High heat & humidity
  • 3.3 inches monthly rainfall in July in Sioux City3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in July in Sioux City9
    9 (Very High) UV index

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The July 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)  |  Imperial (°F)

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How hot is it in Sioux City in July?

Daytime temperatures usually reach 88°F in Sioux City in July with high heat and humidity, falling to 64°F at night.

How sunny is it in Sioux City in July?

There are normally 11 hours of bright sunshine each day in Sioux City in July - that's 72% of daylight hours.

Does it rain in Sioux City in July?

There are usually 9 days with some rain in Sioux City in July and the average monthly rainfall is 3.3 inches.

Sioux City July sunrise & sunset times

Browse the sunrise and sunset times for Sioux City in July 2025. Select a month to view Sioux City sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:52 20:07
Wednesday, 16th July 2025 05:03 20:00
Thursday, 31st July 2025 05:17 19:46

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