S
M
T
W
T
F
S
29
46°
35°
30
50°
32°
31
58°
38°
1
49°
42°
2
54°
41°
3
58°
44°
4
63°
40°
5
67°
46°
6
73°
46°
7
56°
43°
8
61°
39°
9
66°
41°
10
69°
49°
11
57°
49°
12
62°
48°
13
57°
47°
14
51°
40°
15
55°
38°
16
60°
41°
17
56°
44°
18
53°
45°
19
57°
45°
20
59°
45°
21
60°
44°
22
62°
45°
23
61°
44°
24
56°
40°
25
56°
40°
26
58°
41°
27
63°
41°
28
63°
42°
29
58°
43°
30
58°
47°
1
59°
43°
2
59°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Seattle
Seattle's April 2026 forecast shows daily high temperatures ranging from 51° to 69°, with overnight lows between 38° and 49°. The average high for April is 59° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Seattle. See also: May | June | July.
