Climate almanac
Waterloo
Iowa, United States · 42.49°, -92.34°
What is the weather like in Waterloo in December?
In December, Waterloo is typically 35°F (2°C) during the day and 21°F (-6°C) at night. The month brings about 1.6 in (41 mm) of precipitation in total. Snowfall averages about 4.9 in (125 mm) over the month.
- Average high35°F (2°C)
- Average low21°F (-6°C)
- Precipitation1.6 in (41 mm)
- Clear or mostly clear days6
- Snowfall4.9 in (125 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)