S
M
T
W
T
F
S
30
82°
68°
31
91°
70°
1
94°
71°
2
95°
72°
3
95°
73°
4
94°
73°
5
88°
70°
6
82°
61°
7
83°
57°
8
86°
68°
9
79°
64°
10
79°
54°
11
82°
61°
12
83°
64°
13
84°
64°
14
83°
64°
15
75°
58°
16
74°
55°
17
71°
51°
18
72°
51°
19
72°
49°
20
71°
54°
21
76°
53°
22
72°
58°
23
73°
57°
24
79°
58°
25
80°
58°
26
80°
57°
27
79°
58°
28
80°
59°
29
80°
59°
30
79°
58°
1
76°
53°
2
72°
47°
3
65°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kankakee
Kankakee's September 2026 forecast shows daily high temperatures ranging from 65° to 86°, with overnight lows between 43° and 68°. The average high for September is 77° 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 Kankakee. See also: October | November | December.
