Weather in Sioux City in August
Sioux City, United States averages a high of 27.9°C (82.2°F) and low of 18.3°C (64.9°F) in August, with 8 rain days and 11.4 hours of daily sunshine. Travel score: 84.8/100 (Excellent). The best time to visit Sioux City is September.
High
28°C82°F
Low
18°C65°F
🌧️
8
rain days
☀️
11.4
hrs/day sunshine
💧
71%
humidity
85— Excellent
August in Sioux City is warm and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Sioux City?
How much does it rain in Sioux City in August?
Sioux City receives an average of 85mm of rainfall across 8 rainy days in August. The annual total is 766.3mm.
What should I pack for Sioux City in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 28°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (8 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to United States in August?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31