Climate almanac
Prosser
Washington, United States · 46.21°, -119.77°
What is the weather like in Prosser in December?
In December, Prosser is typically 42°F (5°C) during the day and 30°F (-1°C) at night. The month brings about 1.7 in (43 mm) of precipitation in total. Snowfall averages about 2.5 in (62 mm) over the month.
- Average high42°F (5°C)
- Average low30°F (-1°C)
- Precipitation1.7 in (43 mm)
- Clear or mostly clear days3
- Snowfall2.5 in (62 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)