S
M
T
W
T
F
S
26
85°
62°
27
82°
61°
28
81°
60°
29
82°
61°
30
82°
61°
31
81°
60°
1
78°
61°
2
77°
60°
3
79°
60°
4
81°
60°
5
81°
59°
6
75°
59°
7
79°
60°
8
80°
59°
9
80°
61°
10
82°
60°
11
82°
58°
12
78°
58°
13
74°
57°
14
80°
58°
15
81°
49°
16
72°
47°
17
68°
45°
18
69°
47°
19
70°
49°
20
73°
54°
21
77°
57°
22
79°
57°
23
78°
58°
24
79°
47°
25
74°
46°
26
67°
46°
27
66°
48°
28
76°
55°
29
78°
57°
30
79°
47°
31
79°
43°
1
66°
50°
2
71°
55°
3
70°
51°
4
77°
42°
5
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lewis
Lewis's August 2026 forecast shows daily high temperatures ranging from 66° to 85°, with overnight lows between 42° and 62°. 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 Lewis. See also: September | October | November.
