Climate almanac
Rapid City
South Dakota, United States · 44.08°, -103.23°
What is the weather like in Rapid City in December?
In December, Rapid City is typically 39°F (4°C) during the day and 21°F (-6°C) at night. The month brings about 0.9 in (24 mm) of precipitation in total. Snowfall averages about 5.9 in (150 mm) over the month.
- Average high39°F (4°C)
- Average low21°F (-6°C)
- Precipitation0.9 in (24 mm)
- Clear or mostly clear days11
- Snowfall5.9 in (150 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)