Average Temperatures for Washington in January





Average temperatures for January at cities and other locations throughout Washington are listed below in degrees Fahrenheit and Celsius.

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.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Olympic Peninsula & West Coast

Average January temperatures
High °F Low °F Place High °C Low °C
48 37 Aberdeen 9 3
47 36 Clearwater 8 2
47 35 Forks 8 1
47 37 Friday Harbor, San Juan Island 8 3
38 24 Grayland 3 -5
49 36 Long Beach 9 2
45 37 Port Angeles 7 3

San Juan Islands, Puget Sound & South

Average daily temperatures in January
High °F Low °F Place High °C Low °C
48 37 Anacortes 9 3
46 34 Bellingham 8 1
47 36 Bremerton 8 2
46 34 Centralia 8 1
46 37 Everett 8 3
48 35 Longview 9 2
47 35 Mount Vernon 8 2
36 26 Oak Harbor, Whidbey Island 2 -4
44 38 Olga, Orcas Island 7 3
46 33 Olympia 8 1
46 38 Port Townsend 8 4
48 38 Seattle 9 3
47 34 Shelton 8 1
48 37 Tacoma 9 3
45 32 Vancouver 7 0

Cascade Mountains

January temperatures: daily averages
High °F Low °F Place High °C Low °C
38 29 Baker Lake Dam 3 -2
42 32 Baring 6 0
40 30 Darrington 5 -1
39 26 Mt Adams Ranger Station 4 -3
35 24 Mt Rainier Paradise Ranger Station 1 -5
46 33 Mud Mountain Lake Dam 8 1
38 30 Ross Dam 3 -1
32 25 Stampede Pass 0 -4

Eastern Washington State

Average January temperatures
High °F Low °F Place High °C Low °C
33 21 Boundary Dam 0 -6
34 22 Chelan 1 -6
33 23 Coulee Dam 0 -5
42 29 Kennewick 5 -2
34 19 Leavenworth 1 -7
36 24 Moses Lake 2 -5
38 26 Pullman 3 -4
35 25 Spokane 1 -4
42 31 Walla Walla 6 -1
49 38 Wenatchee 10 3
30 15 Winthrop -1 -9
40 24 Yakima 4 -4
Reference

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

Washington Temperatures
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