Climate almanac
Portland
Maine, United States · 43.66°, -70.26°
What is the weather like in Portland in December?
In December, Portland is typically 38°F (3°C) during the day and 28°F (-2°C) at night. The month brings about 5.8 in (148 mm) of precipitation in total. Snowfall averages about 9.8 in (249 mm) over the month.
- Average high38°F (3°C)
- Average low28°F (-2°C)
- Precipitation5.8 in (148 mm)
- Clear or mostly clear days9
- Snowfall9.8 in (249 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)