S
M
T
W
T
F
S
30
81°
55°
31
78°
54°
1
76°
57°
2
78°
56°
3
77°
53°
4
78°
53°
5
79°
58°
6
78°
59°
7
78°
55°
8
77°
52°
9
75°
58°
10
81°
51°
11
76°
50°
12
75°
50°
13
75°
51°
14
76°
56°
15
82°
57°
16
82°
57°
17
81°
56°
18
81°
52°
19
80°
47°
20
72°
47°
21
71°
53°
22
72°
53°
23
78°
54°
24
77°
55°
25
78°
47°
26
77°
44°
27
74°
45°
28
69°
44°
29
69°
43°
30
68°
50°
1
68°
52°
2
Hist. Avg.
71°
48°
3
Hist. Avg.
70°
47°
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 82°, with overnight lows between 43° and 59°. The average high for September is 76° 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 Cicero. See also: October | November | December.