S
M
T
W
T
F
S
30
81°
69°
31
91°
72°
1
94°
77°
2
96°
78°
3
92°
79°
4
93°
78°
5
83°
73°
6
79°
71°
7
80°
66°
8
87°
66°
9
80°
71°
10
76°
65°
11
81°
68°
12
86°
65°
13
78°
61°
14
79°
73°
15
84°
65°
16
73°
65°
17
74°
60°
18
74°
59°
19
72°
57°
20
73°
58°
21
73°
59°
22
76°
61°
23
77°
59°
24
73°
55°
25
73°
61°
26
78°
62°
27
77°
61°
28
77°
61°
29
76°
60°
30
75°
57°
1
73°
54°
2
68°
59°
3
73°
58°
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 68° to 86°, with overnight lows between 54° and 73°. The average high for September is 76° with an average low of 61°. 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.