S
M
T
W
T
F
S
30
82°
67°
31
91°
70°
1
97°
74°
2
95°
71°
3
92°
73°
4
92°
73°
5
84°
72°
6
79°
66°
7
82°
60°
8
85°
60°
9
79°
66°
10
76°
57°
11
N/A
12
86°
64°
13
74°
57°
14
72°
66°
15
87°
69°
16
80°
64°
17
78°
62°
18
72°
58°
19
70°
53°
20
73°
55°
21
73°
53°
22
74°
57°
23
74°
53°
24
73°
55°
25
73°
52°
26
77°
59°
27
77°
58°
28
76°
58°
29
74°
58°
30
74°
57°
1
75°
56°
2
75°
55°
3
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Calumet City
Calumet City's September 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 52° and 69°. The average high for September is 75° with an average low of 58°. 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 Calumet City. See also: October | November | December.
