S
M
T
W
T
F
S
26
60°
44°
27
68°
51°
28
64°
50°
29
57°
39°
30
56°
38°
1
50°
36°
2
56°
32°
3
67°
45°
4
81°
49°
5
60°
46°
6
58°
43°
7
57°
47°
8
61°
49°
9
74°
49°
10
53°
45°
11
52°
45°
12
55°
47°
13
64°
52°
14
62°
56°
15
69°
54°
16
63°
52°
17
60°
53°
18
65°
52°
19
67°
51°
20
61°
46°
21
60°
48°
22
60°
47°
23
61°
50°
24
62°
50°
25
63°
50°
26
63°
49°
27
64°
49°
28
66°
50°
29
68°
56°
30
73°
57°
31
74°
59°
1
74°
56°
2
68°
57°
3
75°
60°
4
76°
61°
5
76°
60°
6
68°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chicago
Chicago's May 2026 forecast shows daily high temperatures ranging from 52° to 76°, with overnight lows between 43° and 61°. The average high for May is 65° with an average low of 52°. 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 Chicago. See also: June | July | August.
