S
M
T
W
T
F
S
26
104°
68°
27
98°
67°
28
101°
66°
29
99°
67°
30
86°
59°
31
94°
64°
1
101°
69°
2
100°
60°
3
88°
50°
4
84°
52°
5
88°
61°
6
97°
60°
7
93°
60°
8
91°
61°
9
94°
62°
10
94°
60°
11
88°
56°
12
83°
57°
13
82°
58°
14
91°
61°
15
92°
61°
16
92°
60°
17
82°
59°
18
86°
59°
19
89°
60°
20
90°
59°
21
80°
58°
22
80°
57°
23
78°
54°
24
77°
56°
25
79°
55°
26
79°
56°
27
84°
57°
28
80°
57°
29
81°
56°
30
83°
56°
31
82°
55°
1
77°
51°
2
77°
53°
3
86°
55°
4
87°
55°
5
86°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Capitol
Capitol's August 2026 forecast shows daily high temperatures ranging from 77° to 101°, with overnight lows between 50° and 69°. The average high for August is 87° with an average low of 58°. 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 Capitol. See also: September | October | November.