S
M
T
W
T
F
S
26
88°
61°
27
91°
62°
28
92°
63°
29
93°
64°
30
94°
65°
31
94°
67°
1
93°
66°
2
95°
67°
3
95°
67°
4
94°
66°
5
94°
66°
6
93°
65°
7
93°
66°
8
94°
67°
9
94°
67°
10
95°
66°
11
95°
67°
12
94°
67°
13
94°
64°
14
92°
66°
15
95°
67°
16
94°
66°
17
93°
64°
18
92°
63°
19
91°
64°
20
92°
64°
21
93°
67°
22
95°
68°
23
97°
67°
24
97°
68°
25
96°
68°
26
97°
67°
27
96°
67°
28
97°
66°
29
96°
64°
30
95°
64°
31
92°
66°
1
95°
66°
2
95°
65°
3
94°
64°
4
92°
60°
5
90°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Charter Oak
Charter Oak's August 2026 forecast shows daily high temperatures ranging from 88° to 97°, with overnight lows between 59° and 68°. The average high for August is 94° with an average low of 65°. 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 Charter Oak. See also: September | October | November.