S
M
T
W
T
F
S
26
87°
69°
27
92°
71°
28
90°
65°
29
64°
56°
30
63°
53°
1
64°
51°
2
76°
43°
3
81°
49°
4
85°
59°
5
87°
53°
6
66°
51°
7
75°
44°
8
81°
58°
9
89°
59°
10
81°
60°
11
77°
53°
12
85°
55°
13
91°
60°
14
91°
64°
15
86°
74°
16
87°
68°
17
85°
72°
18
90°
75°
19
80°
58°
20
74°
57°
21
75°
63°
22
85°
64°
23
85°
61°
24
N/A
25
85°
65°
26
82°
66°
27
80°
64°
28
87°
65°
29
90°
69°
30
88°
67°
31
83°
64°
1
82°
62°
2
79°
61°
3
82°
61°
4
85°
64°
5
86°
68°
6
90°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in South Bend
South Bend's May 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 61° and 69°. The average high for May 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 May weather will actually feel in South Bend. See also: June | July | August.