Climate almanac
Gillette
Wyoming, United States · 44.29°, -105.50°
What is the weather like in Gillette in December?
In December, Gillette is typically 39°F (4°C) during the day and 21°F (-6°C) at night. The month brings about 0.9 in (22 mm) of precipitation in total. Snowfall averages about 5.5 in (139 mm) over the month.
- Average high39°F (4°C)
- Average low21°F (-6°C)
- Precipitation0.9 in (22 mm)
- Clear or mostly clear days9
- Snowfall5.5 in (139 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)