S
M
T
W
T
F
S
26
91°
73°
27
91°
73°
28
84°
68°
29
82°
66°
30
79°
63°
31
72°
63°
1
81°
63°
2
81°
61°
3
81°
63°
4
74°
55°
5
74°
53°
6
77°
60°
7
79°
62°
8
82°
64°
9
84°
68°
10
84°
67°
11
81°
64°
12
78°
60°
13
80°
61°
14
77°
60°
15
78°
60°
16
78°
63°
17
80°
60°
18
85°
66°
19
84°
64°
20
82°
64°
21
83°
66°
22
85°
65°
23
83°
65°
24
81°
64°
25
80°
63°
26
74°
62°
27
75°
61°
28
81°
62°
29
81°
62°
30
82°
63°
31
83°
63°
1
82°
62°
2
83°
63°
3
83°
64°
4
82°
63°
5
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Charles City
Charles City's August 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 53° and 68°. The average high for August is 81° with an average low of 62°. 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 Charles City. See also: September | October | November.