S
M
T
W
T
F
S
26
83°
60°
27
81°
56°
28
82°
57°
29
82°
57°
30
83°
52°
31
81°
54°
1
80°
51°
2
77°
58°
3
80°
58°
4
84°
61°
5
85°
60°
6
85°
58°
7
84°
51°
8
83°
50°
9
82°
50°
10
82°
48°
11
73°
50°
12
74°
54°
13
77°
53°
14
82°
54°
15
82°
52°
16
81°
54°
17
82°
50°
18
79°
55°
19
79°
48°
20
77°
51°
21
74°
48°
22
73°
47°
23
72°
46°
24
71°
48°
25
72°
50°
26
70°
49°
27
70°
52°
28
69°
47°
29
70°
48°
30
72°
51°
31
72°
55°
1
73°
56°
2
75°
57°
3
80°
51°
4
80°
56°
5
78°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Federal Way
Federal Way's August 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 46° and 61°. The average high for August is 78° with an average low of 53°. 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 Federal Way. See also: September | October | November.