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
82°
57°
19
84°
55°
20
89°
54°
21
81°
55°
22
78°
60°
23
77°
56°
24
83°
54°
25
87°
55°
26
78°
54°
27
75°
54°
28
73°
53°
29
73°
51°
30
74°
52°
31
75°
50°
1
73°
50°
2
74°
51°
3
72°
52°
4
73°
51°
5
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Lewis-Dupont
Fort Lewis-Dupont's August 2026 forecast shows daily high temperatures ranging from 71° to 87°, with overnight lows between 50° and 55°. The average high for August is 75° with an average low of 52°. 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 Fort Lewis-Dupont. See also: September | October | November.
