S
M
T
W
T
F
S
26
58°
39°
27
57°
38°
28
58°
46°
29
67°
49°
30
67°
48°
1
69°
44°
2
59°
43°
3
59°
42°
4
60°
39°
5
60°
49°
6
62°
50°
7
71°
51°
8
72°
48°
9
62°
45°
10
62°
50°
11
63°
50°
12
66°
49°
13
69°
51°
14
73°
51°
15
74°
55°
16
74°
53°
17
73°
51°
18
65°
49°
19
66°
49°
20
71°
54°
21
71°
54°
22
70°
46°
23
70°
47°
24
73°
48°
25
74°
49°
26
76°
50°
27
79°
51°
28
79°
53°
29
80°
53°
30
81°
54°
31
77°
53°
1
79°
58°
2
81°
53°
3
75°
59°
4
82°
60°
5
83°
61°
6
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Carol Stream
Carol Stream's May 2026 forecast shows daily high temperatures ranging from 57° to 83°, with overnight lows between 38° and 61°. The average high for May is 70° with an average low of 50°. 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 Carol Stream. See also: June | July | August.