Climate almanac
Denison
Iowa, United States · 42.02°, -95.36°
What is the weather like in Denison in December?
In December, Denison is typically 37°F (3°C) during the day and 21°F (-6°C) at night. The month brings about 1.5 in (37 mm) of precipitation in total. Snowfall averages about 4.1 in (105 mm) over the month.
- Average high37°F (3°C)
- Average low21°F (-6°C)
- Precipitation1.5 in (37 mm)
- Clear or mostly clear days9
- Snowfall4.1 in (105 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)