Average Snowfall for Washington in December





The tables below give monthly averages for snowfall during December at cities, towns and parks in Washington. The numbers are for the total amount of new snow and how many days it snows at least 0.1 inches (0.25 centimetres) this month.

The snowfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each region of the state: Olympic Peninsula & West Coast, San Juan Islands & Puget Sound, Cascade Mountains and Eastern Washington.

Olympic Peninsula & West Coast

Average total snowfall in December
Days Place Inches Centi­metres
0.0 Aberdeen 0.0 0.0
1.0 Forks 1.9 4.8
0.0 Grayland 0.0 0.0
0.0 Long Beach 0.0 0.0
0.2 Port Angeles 0.4 1.0

San Juan Islands, Puget Sound & South

December snowfall averages
Days Place Inches Centi­metres
0.4 Bellingham 0.3 0.8
0.5 Bremerton 1.3 3.3
0.9 Oak Harbor, Whidbey Island 2.4 6.1
0.8 Olga, Orcas Island 2.8 7.1
0.8 Olympia 1.2 3.0
0.1 Port Townsend 0.4 1.0
1.5 Seattle 1.7 4.3
0.2 Vancouver 0.2 0.5

Cascade Mountains

Average snow for December
Days Place Inches Centi­metres
5.5 Baker Lake Dam 12.9 32.8
5.1 Baring 17.0 43.2
6.6 Ross Dam 23.7 60.2

Eastern Washington State

Average total snowfall in December
Days Place Inches Centi­metres
10.4 Boundary Dam 18.2 46.2
5.4 Chelan 8.7 22.1
8.9 Leavenworth 32.4 82.3
4.9 Pullman 10.3 26.2
9.5 Spokane 13.8 35.1
2.4 Walla Walla 2.7 6.9
5.3 Wenatchee 6.0 15.2
11.7 Winthrop 21.8 55.4
5.5 Yakima 7.7 19.6
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Washington Snowfall
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