S
M
T
W
T
F
S
30
81°
63°
31
84°
63°
1
83°
55°
2
80°
56°
3
82°
60°
4
77°
60°
5
77°
59°
6
76°
58°
7
77°
55°
8
79°
51°
9
75°
51°
10
74°
60°
11
79°
58°
12
80°
59°
13
80°
59°
14
78°
58°
15
79°
59°
16
72°
49°
17
Hist. Avg.
74°
54°
18
Hist. Avg.
74°
53°
19
Hist. Avg.
74°
53°
20
Hist. Avg.
73°
52°
21
Hist. Avg.
73°
52°
22
Hist. Avg.
72°
51°
23
Hist. Avg.
72°
51°
24
Hist. Avg.
72°
50°
25
Hist. Avg.
71°
50°
26
Hist. Avg.
71°
50°
27
Hist. Avg.
70°
49°
28
Hist. Avg.
70°
49°
29
Hist. Avg.
69°
48°
30
Hist. Avg.
69°
48°
1
Hist. Avg.
68°
48°
2
Hist. Avg.
68°
47°
3
Hist. Avg.
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Carol Stream
Carol Stream's September 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 49° and 63°. The average high for September is 79° with an average low of 57°. 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 Carol Stream. See also: October | November | December.
