S
M
T
W
T
F
S
26
76°
59°
27
81°
58°
28
74°
56°
29
79°
58°
30
80°
50°
31
87°
51°
1
74°
53°
2
75°
51°
3
77°
46°
4
83°
50°
5
90°
50°
6
90°
52°
7
87°
54°
8
85°
54°
9
80°
51°
10
76°
55°
11
80°
55°
12
81°
56°
13
82°
55°
14
80°
57°
15
77°
57°
16
76°
59°
17
82°
55°
18
78°
56°
19
78°
55°
20
84°
57°
21
79°
56°
22
73°
58°
23
74°
54°
24
78°
55°
25
79°
52°
26
75°
54°
27
73°
52°
28
74°
54°
29
78°
53°
30
76°
54°
31
74°
53°
1
79°
57°
2
78°
57°
3
77°
58°
4
77°
57°
5
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Steilacoom
Steilacoom's August 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 52° and 58°. The average high for August is 77° with an average low of 55°. 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 Steilacoom. See also: September | October | November.
