S
M
T
W
T
F
S
30
75°
62°
31
70°
61°
1
78°
66°
2
85°
64°
3
85°
66°
4
81°
65°
5
77°
59°
6
76°
55°
7
78°
53°
8
81°
53°
9
77°
62°
10
79°
64°
11
73°
54°
12
80°
48°
13
83°
64°
14
68°
47°
15
75°
60°
16
76°
64°
17
77°
61°
18
74°
54°
19
73°
60°
20
73°
55°
21
69°
57°
22
68°
54°
23
73°
52°
24
73°
53°
25
74°
53°
26
67°
54°
27
71°
54°
28
73°
54°
29
71°
48°
30
64°
49°
1
69°
54°
2
70°
53°
3
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cicero
Cicero's September 2026 forecast shows daily high temperatures ranging from 64° to 77°, with overnight lows between 47° and 64°. The average high for September is 71° with an average low of 54°. 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 Cicero. See also: October | November | December.