S
M
T
W
T
F
S
26
83°
67°
27
88°
66°
28
84°
61°
29
80°
60°
30
81°
59°
31
80°
60°
1
78°
59°
2
79°
58°
3
80°
59°
4
81°
65°
5
84°
59°
6
79°
58°
7
80°
56°
8
80°
57°
9
81°
59°
10
79°
58°
11
78°
61°
12
80°
63°
13
85°
65°
14
87°
66°
15
87°
63°
16
88°
62°
17
83°
64°
18
78°
65°
19
86°
64°
20
85°
65°
21
86°
63°
22
84°
60°
23
85°
57°
24
77°
55°
25
76°
54°
26
83°
63°
27
80°
60°
28
Hist. Avg.
82°
60°
29
Hist. Avg.
82°
60°
30
Hist. Avg.
81°
60°
31
Hist. Avg.
81°
59°
1
Hist. Avg.
81°
59°
2
Hist. Avg.
81°
59°
3
Hist. Avg.
80°
58°
4
Hist. Avg.
80°
58°
5
Hist. Avg.
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Charter Oak
Charter Oak's August 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 54° and 67°. The average high for August is 82° with an average low of 61°. 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.