Best time to visit Sioux City

Find the best time to visit Sioux City and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Sioux City by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Iowa

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When is the best time to visit Sioux City?

The best time to visit Sioux City is June based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

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Max Day Temperature (°C)

  • -2°C maximum daytime temperature in January in Sioux City-2
    Jan
  • 1°C maximum daytime temperature in February in Sioux City1
    Feb
  • 8°C maximum daytime temperature in March in Sioux City8
    Mar
  • 17°C maximum daytime temperature in April in Sioux City17
    Apr
  • 23°C maximum daytime temperature in May in Sioux City23
    May
  • 28°C maximum daytime temperature in June in Sioux City28
    Jun
  • 31°C maximum daytime temperature in July in Sioux City31
    Jul
  • 29°C maximum daytime temperature in August in Sioux City29
    Aug
  • 24°C maximum daytime temperature in September in Sioux City24
    Sep
  • 18°C maximum daytime temperature in October in Sioux City18
    Oct
  • 8°C maximum daytime temperature in November in Sioux City8
    Nov
  • -1°C maximum daytime temperature in December in Sioux City-1
    Dec

Hours of Sunshine (daily)

Which is the hottest month in Sioux City?

The hottest time of year in Sioux City is normally July. Expect maximum daytime temperatures to reach 31°C with high heat and humidity.

Which month has the most rain in Sioux City?

In terms of rainfall, June is usually the wettest month in Sioux City with 95mm on average. There are normally 10 days in June with some rain.

When is it sunniest in Sioux City?

The sunniest time of year in Sioux City is normally July with bright sunshine on average for 72% of daylight hours; that's 11 hours of sunshine per day.

Best time to visit

The weather guide for Iowa (Sioux City) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

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

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