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°
59°
10
87°
62°
11
76°
66°
12
77°
65°
13
76°
65°
14
81°
69°
15
81°
72°
16
83°
72°
17
79°
62°
18
81°
59°
19
82°
62°
20
80°
60°
21
78°
63°
22
77°
62°
23
74°
57°
24
74°
52°
25
78°
51°
26
83°
59°
27
79°
61°
28
81°
59°
29
81°
66°
30
85°
68°
31
91°
69°
1
88°
68°
2
87°
67°
3
86°
65°
4
84°
64°
5
82°
63°
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 81° to 91°, with overnight lows between 59° and 69°. The average high for August is 85° with an average low of 65°. 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.