S
M
T
W
T
F
S
30
83°
57°
31
79°
55°
1
77°
57°
2
77°
57°
3
78°
58°
4
78°
56°
5
77°
56°
6
75°
61°
7
77°
56°
8
77°
55°
9
78°
55°
10
76°
54°
11
75°
54°
12
75°
56°
13
76°
55°
14
75°
58°
15
77°
59°
16
80°
57°
17
82°
58°
18
81°
53°
19
73°
55°
20
81°
56°
21
72°
48°
22
71°
48°
23
Hist. Avg.
76°
52°
24
Hist. Avg.
75°
52°
25
Hist. Avg.
75°
51°
26
Hist. Avg.
74°
51°
27
Hist. Avg.
74°
50°
28
Hist. Avg.
74°
50°
29
Hist. Avg.
73°
50°
30
Hist. Avg.
73°
49°
1
Hist. Avg.
72°
49°
2
Hist. Avg.
72°
48°
3
Hist. Avg.
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kankakee
Kankakee's September 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 48° and 61°. The average high for September is 77° with an average low of 56°. 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.
