Climate almanac
Great Falls
Montana, United States · 47.50°, -111.30°
What is the weather like in Great Falls in December?
In December, Great Falls is typically 37°F (3°C) during the day and 22°F (-5°C) at night. The month brings about 1.0 in (25 mm) of precipitation in total. Snowfall averages about 5.9 in (151 mm) over the month.
- Average high37°F (3°C)
- Average low22°F (-5°C)
- Precipitation1.0 in (25 mm)
- Clear or mostly clear days6
- Snowfall5.9 in (151 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)