S
M
T
W
T
F
S
26
87°
68°
27
88°
70°
28
78°
62°
29
80°
59°
30
83°
58°
31
83°
61°
1
75°
68°
2
80°
64°
3
83°
59°
4
82°
62°
5
82°
68°
6
78°
66°
7
87°
65°
8
88°
66°
9
86°
67°
10
81°
66°
11
77°
66°
12
82°
65°
13
78°
63°
14
76°
62°
15
78°
63°
16
76°
62°
17
77°
59°
18
78°
62°
19
77°
60°
20
79°
59°
21
78°
57°
22
79°
60°
23
83°
66°
24
76°
62°
25
77°
63°
26
82°
65°
27
82°
64°
28
81°
62°
29
75°
58°
30
74°
58°
31
74°
56°
1
75°
60°
2
78°
63°
3
77°
63°
4
80°
62°
5
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South Bend
South Bend's August 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 56° and 67°. The average high for August is 78° with an average low of 62°. 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 South Bend. See also: September | October | November.