Weather in Sioux Falls in August
Sioux Falls, United States averages a high of 26.9°C (80.4°F) and low of 17.3°C (63.1°F) in August, with 8 rain days and 11.6 hours of daily sunshine. Travel score: 84.5/100 (Excellent). The best time to visit Sioux Falls is July.
High
27°C80°F
Low
17°C63°F
🌧️
8
rain days
☀️
11.6
hrs/day sunshine
💧
72%
humidity
85— Excellent
August in Sioux Falls is warm and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Sioux Falls?
How much does it rain in Sioux Falls in August?
Sioux Falls receives an average of 78.1mm of rainfall across 8 rainy days in August. The annual total is 745.5mm.
What should I pack for Sioux Falls in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧴
Sunscreen SPF 30+
12 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