Rapid City Weather in December

December in Rapid City brings low temperatures, with daytime highs of 3°C (37°F) and nights around -9°C (16°F). Only 12 mm (0.5 in) of snow/rainfall is typical, making it a largely dry month.

Rainfall in Rapid City in December

You can expect snow/rain on roughly 6 days based on historical data, averaging 12 mm (0.5 in) for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.

Temperature in Rapid City in December

December in Rapid City sees highs of 3°C (37°F) and lows of -9°C (16°F) overnight. Experience the winter season in December. Staying warm is the main priority this month, especially during mornings and evenings. Nights drop below freezing to -9°C (16°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. This month is known for being the coldest, so make sure you pack appropriately with plenty of warm clothing.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Rapid City. Our weather planner can help you explore destinations with more pleasant weather conditions.