Average April Temperatures for Washington

Average temperatures for April 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 April temperatures
High °F	Low °F	Place	High °C	Low °C
57	41	Aberdeen	14	5
59	39	Clearwater	15	4
59	38	Forks	15	3
57	41	Friday Harbor, San Juan Island	14	5
59	33	Grayland	15	0
55	40	Long Beach	13	5
54	42	Port Angeles	12	6

San Juan Islands, Puget Sound & South

Average daily temperatures in April
High °F	Low °F	Place	High °C	Low °C
59	43	Anacortes	15	6
58	42	Bellingham	14	5
59	41	Bremerton	15	5
60	39	Centralia	15	4
56	43	Everett	13	6
62	40	Longview	17	5
58	41	Mount Vernon	15	5
64	40	Oak Harbor, Whidbey Island	18	5
56	44	Olga, Orcas Island	13	7
59	38	Olympia	15	3
58	43	Port Townsend	14	6
59	43	Seattle	15	6
60	38	Shelton	15	3
60	44	Tacoma	15	7
59	38	Vancouver	15	4

Cascade Mountains

April temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
56	36	Baker Lake Dam	13	2
59	38	Baring	15	3
59	38	Darrington	15	3
58	33	Mt Adams Ranger Station	14	1
40	26	Mt Rainier Paradise Ranger Station	4	-3
56	38	Mud Mountain Lake Dam	13	3
56	38	Ross Dam	13	3
46	33	Stampede Pass	8	0

Eastern Washington State

Average April temperatures
High °F	Low °F	Place	High °C	Low °C
58	33	Boundary Dam	14	0
62	38	Chelan	17	3
61	38	Coulee Dam	16	3
66	42	Kennewick	19	6
61	32	Leavenworth	16	0
64	37	Moses Lake	18	3
57	35	Pullman	14	2
57	37	Spokane	14	3
63	43	Walla Walla	17	6
58	43	Wenatchee	15	6
61	32	Winthrop	16	0
65	35	Yakima	18	2

Average Temperatures for Washington in April

Olympic Peninsula & West Coast

San Juan Islands, Puget Sound & South

Cascade Mountains

Eastern Washington State

Reference

More Washington Weather Information