S
M
T
W
T
F
S
26
80°
59°
27
81°
60°
28
80°
61°
29
81°
60°
30
82°
60°
31
83°
61°
1
83°
61°
2
85°
66°
3
85°
64°
4
83°
59°
5
80°
60°
6
79°
60°
7
79°
62°
8
81°
60°
9
84°
66°
10
85°
66°
11
85°
60°
12
83°
58°
13
78°
58°
14
77°
56°
15
78°
58°
16
79°
61°
17
78°
65°
18
79°
63°
19
84°
63°
20
79°
57°
21
78°
58°
22
77°
62°
23
77°
64°
24
79°
57°
25
83°
57°
26
77°
56°
27
76°
55°
28
75°
55°
29
76°
54°
30
76°
56°
31
77°
56°
1
75°
55°
2
77°
57°
3
76°
58°
4
78°
61°
5
81°
60°
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 75° to 85°, with overnight lows between 54° and 66°. The average high for August is 80° with an average low of 60°. 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.