Average Snowfall for Washington in December

The tables below give monthly averages for snowfall during December at cities and other locations 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