S
M
T
W
T
F
S
26
65°
47°
27
65°
48°
28
62°
50°
29
54°
39°
30
55°
34°
1
49°
33°
2
52°
28°
3
60°
40°
4
79°
50°
5
58°
43°
6
56°
36°
7
57°
33°
8
64°
41°
9
71°
41°
10
63°
38°
11
61°
35°
12
62°
46°
13
55°
40°
14
60°
47°
15
69°
52°
16
75°
56°
17
74°
57°
18
77°
57°
19
74°
56°
20
74°
56°
21
78°
59°
22
76°
52°
23
71°
56°
24
75°
58°
25
78°
59°
26
78°
60°
27
79°
60°
28
79°
60°
29
78°
60°
30
77°
58°
31
71°
55°
1
71°
52°
2
72°
60°
3
77°
61°
4
78°
61°
5
74°
60°
6
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Bend
South Bend's May 2026 forecast shows daily high temperatures ranging from 55° to 79°, with overnight lows between 35° and 61°. The average high for May is 72° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in South Bend. See also: June | July | August.