Average Precipitation for Washington in April





The tables below give monthly averages for rainfall plus snowfall during April 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 April
Days Place Inches Milli­metres
19 Aberdeen 6.2 157
18 Clearwater 8.6 218
20 Forks 9.2 234
Friday Harbor, San Juan Island 1.6 41
19 Grayland 5.7 146
20 Long Beach 6.3 159
12 Port Angeles 1.3 34

San Juan Islands, Puget Sound & South

April averages for total precipitation
Days Place Inches Milli­metres
13 Anacortes 1.9 49
15 Bellingham 2.7 68
16 Bremerton 3.6 91
16 Everett 3.0 76
19 Longview 3.8 96
10 Olga, Orcas Island 1.9 48
16 Olympia 3.5 90
13 Port Townsend 1.5 37
14 Seattle 2.8 71
14 Tacoma 3.0 76
17 Vancouver 3.2 81

Cascade Mountains

Average amount of rain and snow in April
Days Place Inches Milli­metres
17 Baker Lake Dam 6.7 171
19 Baring 7.8 199
Darrington 5.4 138
Mt Adams Ranger Station 2.4 62
19 Mt Rainier Paradise Ranger Station 8.3 211
19 Mud Mountain Lake Dam 5.0 128
14 Ross Dam 3.1 78
19 Stampede Pass 5.3 134

Eastern Washington State

Precipitation totals for April
Days Place Inches Milli­metres
12 Boundary Dam 2.2 56
5 Chelan 0.6 16
9 Coulee Dam 0.9 22
6 Kennewick 0.6 14
7 Leavenworth 1.1 28
10 Pullman 1.8 44
10 Spokane 1.3 33
10 Walla Walla 1.9 49
6 Wenatchee 0.6 16
6 Winthrop 0.8 19
6 Yakima 0.6 14
Reference

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

Washington Precipitation
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