Weather in Rapid City in May
Rapid City, United States averages a high of 18.5°C (65.3°F) and low of 7.3°C (45.1°F) in May, with 13 rain days and 11.2 hours of daily sunshine. Travel score: 71.8/100 (Good). The best time to visit Rapid City is August.
High
19°C65°F
Low
7°C45°F
🌧️
13
rain days
☀️
11.2
hrs/day sunshine
💧
62%
humidity
72— Good
May in Rapid City is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Rapid City?
How much does it rain in Rapid City in May?
Rapid City receives an average of 101.5mm of rainfall across 13 rainy days in May. The annual total is 557.4mm.
What should I pack for Rapid City in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 19°C
Recommended
🧥
Light rain jacket
Some rainy days expected (13 days)
☔
Umbrella
Be prepared for occasional showers
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
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