Weather in Rapid City in December
Rapid City, United States averages a high of 2.9°C (37.2°F) and low of -6.8°C (19.8°F) in December, with 4 rain days and 7.1 hours of daily sunshine. Travel score: 57.2/100 (Mixed). The best time to visit Rapid City is August.
High
3°C37°F
Low
-7°C20°F
🌧️
4
rain days
☀️
7.1
hrs/day sunshine
💧
60%
humidity
57— Mixed
December in Rapid City is cold and mostly dry — bring heavy winter clothing.
What are the average temperatures in Rapid City?
How much does it rain in Rapid City in December?
Rapid City receives an average of 15.6mm of rainfall across 4 rainy days in December. The annual total is 557.4mm.
What should I pack for Rapid City in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around 3°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -7°C
🧣
Warm scarf
Protect against cold winds
🎉Visiting United States in December?
Don't miss any public holidays — check before you book!
Compare Rapid City
Popular comparisons:
How can I plan my trip to Rapid City?
What are other popular cities in United States?
What is the weather like in other months in Rapid City?
Data based on 1994–2024 averages · Last updated: 2024-12-31