Climate almanac
Portland
Oregon, United States · 45.52°, -122.68°
What is the weather like in Portland in December?
In December, Portland is typically 47°F (9°C) during the day and 38°F (3°C) at night. The month brings about 7.9 in (200 mm) of precipitation in total. Snowfall averages about 1.8 in (45 mm) over the month.
- Average high47°F (9°C)
- Average low38°F (3°C)
- Precipitation7.9 in (200 mm)
- Clear or mostly clear days3
- Snowfall1.8 in (45 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)