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

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When is the best time to visit Sioux City?

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

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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 88°F 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 3.7 inches 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)  |  Imperial (°F)

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