S
M
T
W
T
F
S
26
84°
68°
27
88°
66°
28
90°
69°
29
84°
65°
30
83°
69°
31
84°
68°
1
85°
70°
2
90°
71°
3
90°
71°
4
89°
69°
5
88°
69°
6
89°
70°
7
90°
71°
8
90°
71°
9
91°
69°
10
85°
66°
11
86°
68°
12
89°
69°
13
87°
69°
14
82°
62°
15
81°
61°
16
81°
61°
17
82°
63°
18
84°
68°
19
86°
68°
20
87°
67°
21
86°
68°
22
84°
67°
23
87°
67°
24
88°
60°
25
86°
62°
26
86°
66°
27
88°
67°
28
84°
66°
29
85°
62°
30
81°
64°
31
81°
65°
1
82°
66°
2
82°
60°
3
81°
56°
4
79°
56°
5
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Charleston Township
Charleston Township's August 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 56° and 71°. The average high for August is 85° with an average low of 66°. 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 Charleston Township. See also: September | October | November.