S
M
T
W
T
F
S
26
87°
70°
27
87°
70°
28
86°
69°
29
88°
70°
30
87°
69°
31
86°
68°
1
81°
66°
2
79°
63°
3
80°
67°
4
81°
68°
5
83°
68°
6
84°
67°
7
86°
68°
8
86°
68°
9
85°
67°
10
86°
68°
11
85°
68°
12
86°
67°
13
85°
67°
14
88°
61°
15
86°
62°
16
82°
64°
17
81°
65°
18
85°
63°
19
86°
59°
20
79°
57°
21
78°
57°
22
78°
59°
23
79°
59°
24
79°
58°
25
80°
62°
26
78°
59°
27
85°
62°
28
85°
59°
29
78°
57°
30
77°
57°
31
77°
58°
1
76°
57°
2
76°
56°
3
77°
56°
4
77°
57°
5
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Channahon
Channahon's August 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 56° and 70°. The average high for August is 82° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Channahon. See also: September | October | November.