Climate almanac
Grinnell
Iowa, United States · 41.74°, -92.72°
What is the weather like in Grinnell in December?
In December, Grinnell is typically 38°F (3°C) during the day and 23°F (-5°C) at night. The month brings about 1.7 in (43 mm) of precipitation in total. Snowfall averages about 3.6 in (93 mm) over the month.
- Average high38°F (3°C)
- Average low23°F (-5°C)
- Precipitation1.7 in (43 mm)
- Clear or mostly clear days8
- Snowfall3.6 in (93 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)