Climate almanac
Lewistown
Montana, United States · 47.06°, -109.43°
What is the weather like in Lewistown in December?
In December, Lewistown is typically 35°F (1°C) during the day and 19°F (-7°C) at night. The month brings about 1.2 in (30 mm) of precipitation in total. Snowfall averages about 7.5 in (191 mm) over the month.
- Average high35°F (1°C)
- Average low19°F (-7°C)
- Precipitation1.2 in (30 mm)
- Clear or mostly clear days7
- Snowfall7.5 in (191 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)