Weather in Sioux Falls in May
Sioux Falls, United States averages a high of 20°C (68°F) and low of 9.6°C (49.3°F) in May, with 12 rain days and 10.5 hours of daily sunshine. Travel score: 73.6/100 (Good). The best time to visit Sioux Falls is July.
High
20°C68°F
Low
10°C49°F
🌧️
12
rain days
☀️
10.5
hrs/day sunshine
💧
66%
humidity
74— Good
May in Sioux Falls is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Sioux Falls?
How much does it rain in Sioux Falls in May?
Sioux Falls receives an average of 107.3mm of rainfall across 12 rainy days in May. The annual total is 745.5mm.
What should I pack for Sioux Falls in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 20°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (12 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to United States in May?
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