S
M
T
W
T
F
S
26
66°
43°
27
68°
52°
28
66°
54°
29
55°
39°
30
57°
37°
1
48°
34°
2
55°
30°
3
66°
45°
4
84°
52°
5
59°
46°
6
61°
43°
7
61°
37°
8
66°
43°
9
77°
46°
10
63°
46°
11
55°
43°
12
75°
41°
13
55°
41°
14
64°
39°
15
75°
52°
16
86°
64°
17
88°
66°
18
82°
66°
19
82°
59°
20
61°
48°
21
63°
50°
22
66°
55°
23
66°
55°
24
73°
55°
25
84°
54°
26
84°
55°
27
82°
55°
28
64°
54°
29
82°
50°
30
73°
55°
31
73°
52°
1
66°
55°
2
73°
52°
3
82°
50°
4
90°
57°
5
81°
70°
6
90°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Chicago
South Chicago's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Chicago. See also: June | July | August.