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°
46°
4
77°
51°
5
58°
42°
6
55°
40°
7
57°
42°
8
59°
40°
9
63°
40°
10
62°
44°
11
63°
45°
12
68°
43°
13
70°
46°
14
69°
47°
15
73°
47°
16
72°
46°
17
75°
49°
18
67°
49°
19
73°
52°
20
72°
52°
21
70°
43°
22
66°
42°
23
66°
44°
24
68°
44°
25
68°
45°
26
69°
46°
27
68°
46°
28
69°
47°
29
70°
51°
30
71°
56°
31
75°
51°
1
72°
52°
2
76°
56°
3
78°
57°
4
80°
57°
5
81°
58°
6
82°
59°
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 55° to 82°, with overnight lows between 40° and 59°. The average high for May is 69° with an average low of 48°. 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.