Portland Weather in December

Portland in December averages 4°C (39°F) during the day and -4°C (25°F) at night. This is part of the winter season, and quite a bit of snow/rainfall is expected this month.

Rainfall in Portland in December

Analyzing past climate data, one can expect approximately 13 days of snow/rain, averaging 94 mm (3.7 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Portland in December

If you're visiting Portland in December, expect highs of 4°C (39°F) and overnight lows around -4°C (25°F). Winter occurs in December. Expect a distinctly cold feel throughout the day, not just overnight. At -4°C (25°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. Known for its cold temperatures, this month requires warm clothing. Ensure you dress appropriately to stay comfortable.

Sunshine in Portland in December

The month experiences a moderate amount of sunlight, with 106 hours of sunshine. This provides a nice balance between sunshine and clouds.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Portland. Our weather planner can help you explore destinations with more pleasant weather conditions.