S
M
T
W
T
F
S
26
75°
60°
27
75°
61°
28
76°
62°
29
75°
60°
30
75°
61°
31
76°
66°
1
79°
66°
2
80°
65°
3
80°
67°
4
81°
66°
5
80°
59°
6
77°
59°
7
72°
60°
8
74°
60°
9
75°
62°
10
75°
61°
11
77°
64°
12
78°
60°
13
76°
64°
14
79°
65°
15
78°
65°
16
78°
64°
17
79°
61°
18
75°
59°
19
72°
58°
20
73°
58°
21
73°
61°
22
74°
64°
23
73°
60°
24
75°
61°
25
76°
64°
26
77°
62°
27
77°
57°
28
75°
59°
29
72°
61°
30
76°
62°
31
77°
63°
1
78°
62°
2
78°
62°
3
76°
56°
4
77°
54°
5
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sandwich
Sandwich's August 2026 forecast shows daily high temperatures ranging from 72° to 81°, with overnight lows between 54° and 67°. The average high for August is 76° with an average low of 61°. 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 Sandwich. See also: September | October | November.