Sioux City weather in July 2026

Expect daytime maximum temperatures of 88°F in Sioux City, Iowa in July and high heat and humidity based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 3.3 inches of rainfall in the month.

  • 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 86°F in Sioux City in July with high heat and humidity, falling to 66°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 73% of daylight hours.

Does it rain in Sioux City in July?

There are usually 10 days with some rain in Sioux City in July and the average monthly rainfall is 3.9 inches.

Sioux City July sunrise & sunset times

Browse the sunrise and sunset times for Sioux City in July 2026. Select a month to view Sioux City sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st July 2026 04:52 20:07
Thursday, 16th July 2026 05:03 20:00
Friday, 31st July 2026 05:17 19:46

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