Climate almanac
Casper
Wyoming, United States · 42.87°, -106.31°
What is the weather like in Casper in December?
In December, Casper is typically 34°F (1°C) during the day and 18°F (-8°C) at night. The month brings about 1.0 in (25 mm) of precipitation in total. Snowfall averages about 6.6 in (167 mm) over the month.
- Average high34°F (1°C)
- Average low18°F (-8°C)
- Precipitation1.0 in (25 mm)
- Clear or mostly clear days11
- Snowfall6.6 in (167 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)