Climate almanac
Flagstaff
Arizona, United States · 35.20°, -111.65°
What is the weather like in Flagstaff in December?
In December, Flagstaff is typically 45°F (7°C) during the day and 26°F (-3°C) at night. The month brings about 1.4 in (36 mm) of precipitation in total. Snowfall averages about 5.9 in (150 mm) over the month.
- Average high45°F (7°C)
- Average low26°F (-3°C)
- Precipitation1.4 in (36 mm)
- Clear or mostly clear days15
- Snowfall5.9 in (150 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)