S
M
T
W
T
F
S
26
82°
63°
27
81°
62°
28
77°
61°
29
73°
60°
30
73°
60°
31
76°
59°
1
80°
61°
2
81°
62°
3
74°
54°
4
73°
54°
5
77°
55°
6
80°
57°
7
74°
56°
8
75°
55°
9
73°
63°
10
81°
64°
11
82°
63°
12
83°
65°
13
83°
64°
14
82°
64°
15
83°
60°
16
82°
54°
17
81°
58°
18
77°
61°
19
73°
57°
20
72°
59°
21
72°
52°
22
71°
51°
23
72°
53°
24
73°
56°
25
77°
60°
26
80°
61°
27
80°
62°
28
82°
63°
29
81°
63°
30
80°
62°
31
80°
61°
1
79°
60°
2
78°
57°
3
77°
57°
4
74°
58°
5
71°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in West Seattle
West Seattle's August 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 51° and 65°. The average high for August is 78° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in West Seattle. See also: September | October | November.
