Climate almanac
Sioux City
Iowa, United States · 42.50°, -96.40°
What is the weather like in Sioux City in December?
In December, Sioux City is typically 37°F (3°C) during the day and 20°F (-6°C) at night. The month brings about 1.5 in (38 mm) of precipitation in total. Snowfall averages about 4.8 in (123 mm) over the month.
- Average high37°F (3°C)
- Average low20°F (-6°C)
- Precipitation1.5 in (38 mm)
- Clear or mostly clear days11
- Snowfall4.8 in (123 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)