S
M
T
W
T
F
S
26
70°
46°
27
62°
47°
28
54°
43°
29
61°
38°
30
57°
38°
1
58°
37°
2
67°
32°
3
74°
50°
4
80°
46°
5
58°
47°
6
60°
37°
7
71°
42°
8
78°
50°
9
76°
44°
10
73°
43°
11
83°
52°
12
80°
58°
13
78°
49°
14
82°
56°
15
92°
56°
16
86°
64°
17
84°
61°
18
65°
52°
19
60°
46°
20
59°
41°
21
60°
55°
22
66°
49°
23
76°
53°
24
81°
57°
25
85°
61°
26
82°
65°
27
79°
63°
28
81°
64°
29
80°
63°
30
83°
63°
31
81°
62°
1
81°
61°
2
82°
60°
3
81°
59°
4
77°
63°
5
76°
62°
6
74°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chicago Precinct
Chicago Precinct's May 2026 forecast shows daily high temperatures ranging from 60° to 85°, with overnight lows between 49° and 65°. The average high for May is 78° with an average low of 60°. 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 Precinct. See also: June | July | August.