Washington Weather in December

December in Washington averages 7°C (45°F) during the day and -3°C (27°F) at night. Quite a bit of snow/rainfall is typical this month, with around 97 mm (3.8 in) on average. An umbrella is a good idea.

Rainfall in Washington in December

Records from the past 30 years suggest around 10 days of snow/rain, with 97 mm (3.8 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Washington in December

Washington in December gets highs of 7°C (45°F) during the day and drops to -3°C (27°F) at night. Experience the winter season in December. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With lows of -3°C (27°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated.

Sunshine in Washington in December

The month experiences a moderate amount of sunlight, with 128 hours of sunshine. This provides a nice balance between sunshine and clouds.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Washington. Our weather planner can help you explore destinations with more pleasant weather conditions.