S
M
T
W
T
F
S
26
59°
42°
27
68°
47°
28
64°
50°
29
57°
40°
30
56°
37°
1
50°
35°
2
57°
32°
3
68°
45°
4
80°
51°
5
61°
46°
6
58°
41°
7
60°
37°
8
67°
38°
9
75°
48°
10
65°
40°
11
56°
42°
12
72°
41°
13
59°
45°
14
67°
42°
15
76°
61°
16
82°
64°
17
84°
67°
18
78°
70°
19
76°
50°
20
67°
44°
21
68°
47°
22
74°
52°
23
81°
52°
24
76°
57°
25
79°
57°
26
78°
57°
27
76°
58°
28
77°
51°
29
75°
55°
30
71°
52°
31
71°
49°
1
72°
47°
2
71°
47°
3
72°
49°
4
74°
58°
5
82°
59°
6
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Schaumburg
Schaumburg's May 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 44° and 70°. The average high for May is 76° with an average low of 55°. 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 Schaumburg. See also: June | July | August.