Average Precipitation for Washington in January





The tables below give monthly averages for rainfall plus snowfall during January at cities, towns and parks in Washington.

Each place has a total for the amount of precipitation it usually receives this month. Most sites also have information on the number of days with wet weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The precipitation totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.

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 monthly precipitation in January
Days Place Inches Milli­metres
22 Aberdeen 13.6 345
24 Clearwater 16.5 420
23 Forks 18.3 464
Friday Harbor, San Juan Island 4.2 105
22 Grayland 11.1 282
23 Long Beach 11.8 299
18 Port Angeles 4.0 102

San Juan Islands, Puget Sound & South

January averages for total precipitation
Days Place Inches Milli­metres
18 Anacortes 3.6 91
18 Bellingham 4.7 119
19 Bremerton 8.9 226
19 Everett 5.1 130
23 Longview 6.6 168
15 Olga, Orcas Island 3.9 100
20 Olympia 7.8 199
16 Port Townsend 2.3 57
16 Seattle 5.5 139
19 Tacoma 5.9 151
20 Vancouver 5.9 150

Cascade Mountains

Average amount of rain and snow in January
Days Place Inches Milli­metres
21 Baker Lake Dam 14.7 373
20 Baring 16.0 405
Darrington 11.6 295
Mt Adams Ranger Station 7.4 187
21 Mt Rainier Paradise Ranger Station 18.2 463
18 Mud Mountain Lake Dam 7.2 182
18 Ross Dam 9.3 236
19 Stampede Pass 12.1 308

Eastern Washington State

Precipitation totals for January
Days Place Inches Milli­metres
14 Boundary Dam 3.0 77
10 Chelan 1.6 40
12 Coulee Dam 1.1 27
11 Kennewick 1.1 27
14 Leavenworth 4.5 114
14 Pullman 2.6 65
13 Spokane 1.8 45
13 Walla Walla 2.5 64
11 Wenatchee 1.5 39
12 Winthrop 2.0 50
9 Yakima 1.2 29
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Washington Precipitation
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