S
M
T
W
T
F
S
30
77°
57°
31
77°
58°
1
76°
57°
2
76°
56°
3
77°
56°
4
77°
57°
5
78°
61°
6
77°
60°
7
78°
60°
8
76°
58°
9
75°
55°
10
80°
54°
11
75°
53°
12
75°
54°
13
76°
53°
14
74°
59°
15
81°
60°
16
81°
61°
17
80°
60°
18
80°
51°
19
78°
50°
20
72°
51°
21
71°
56°
22
73°
57°
23
78°
57°
24
77°
58°
25
78°
48°
26
77°
46°
27
69°
48°
28
67°
47°
29
68°
47°
30
67°
46°
1
Hist. Avg.
70°
49°
2
Hist. Avg.
70°
48°
3
Hist. Avg.
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Channahon
Channahon's September 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 46° and 61°. The average high for September is 76° with an average low of 55°. 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 Channahon. See also: October | November | December.
