S
M
T
W
T
F
S
30
83°
61°
31
84°
53°
1
84°
53°
2
77°
52°
3
78°
57°
4
80°
61°
5
85°
52°
6
84°
51°
7
76°
51°
8
77°
57°
9
79°
58°
10
79°
55°
11
76°
56°
12
74°
55°
13
75°
49°
14
73°
47°
15
73°
48°
16
74°
52°
17
73°
54°
18
80°
55°
19
81°
55°
20
80°
54°
21
79°
51°
22
76°
52°
23
71°
45°
24
72°
43°
25
69°
44°
26
70°
44°
27
77°
52°
28
78°
52°
29
Hist. Avg.
70°
52°
30
Hist. Avg.
70°
51°
1
Hist. Avg.
69°
51°
2
Hist. Avg.
69°
50°
3
Hist. Avg.
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Schaumburg
Schaumburg's September 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 43° and 61°. The average high for September is 77° 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 September weather will actually feel in Schaumburg. See also: October | November | December.
