S
M
T
W
T
F
S
26
76°
58°
27
80°
59°
28
74°
58°
29
79°
56°
30
80°
49°
31
86°
50°
1
73°
53°
2
75°
51°
3
76°
45°
4
82°
50°
5
88°
56°
6
90°
54°
7
86°
55°
8
81°
54°
9
79°
55°
10
79°
55°
11
78°
56°
12
79°
57°
13
80°
56°
14
83°
58°
15
83°
57°
16
80°
55°
17
79°
55°
18
78°
54°
19
75°
53°
20
75°
54°
21
73°
56°
22
71°
52°
23
75°
57°
24
70°
50°
25
76°
54°
26
78°
58°
27
78°
58°
28
77°
57°
29
72°
54°
30
69°
50°
31
72°
53°
1
68°
54°
2
68°
49°
3
68°
49°
4
72°
53°
5
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Tacoma
Tacoma's August 2026 forecast shows daily high temperatures ranging from 67° to 90°, with overnight lows between 49° and 58°. The average high for August is 76° with an average low of 54°. 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 Tacoma. See also: September | October | November.