S
M
T
W
T
F
S
26
76°
56°
27
77°
55°
28
75°
54°
29
78°
56°
30
80°
63°
31
80°
63°
1
85°
62°
2
85°
62°
3
84°
61°
4
84°
54°
5
79°
53°
6
76°
52°
7
76°
53°
8
77°
55°
9
76°
57°
10
79°
61°
11
81°
61°
12
83°
63°
13
82°
62°
14
84°
59°
15
84°
54°
16
78°
56°
17
80°
55°
18
79°
58°
19
81°
57°
20
76°
52°
21
81°
58°
22
81°
59°
23
80°
59°
24
82°
54°
25
73°
51°
26
77°
53°
27
79°
58°
28
74°
56°
29
79°
58°
30
82°
52°
31
73°
53°
1
74°
51°
2
71°
51°
3
70°
56°
4
73°
57°
5
78°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Shell Lake
Shell Lake's August 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 51° and 63°. The average high for August is 79° with an average low of 56°. 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 Shell Lake. See also: September | October | November.
