Climate almanac
Sidney
Montana, United States · 47.72°, -104.16°
What is the weather like in Sidney in December?
In December, Sidney is typically 29°F (-2°C) during the day and 13°F (-11°C) at night. The month brings about 0.9 in (23 mm) of precipitation in total. Snowfall averages about 5.7 in (145 mm) over the month.
- Average high29°F (-2°C)
- Average low13°F (-11°C)
- Precipitation0.9 in (23 mm)
- Clear or mostly clear days8
- Snowfall5.7 in (145 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)