S
M
T
W
T
F
S
26
77°
50°
27
75°
50°
28
79°
59°
29
78°
58°
30
67°
60°
31
78°
64°
1
74°
61°
2
80°
61°
3
75°
64°
4
88°
59°
5
97°
62°
6
96°
61°
7
96°
67°
8
86°
71°
9
87°
62°
10
86°
61°
11
85°
61°
12
81°
55°
13
77°
54°
14
79°
55°
15
78°
56°
16
77°
55°
17
78°
54°
18
75°
56°
19
73°
55°
20
74°
57°
21
74°
56°
22
73°
57°
23
75°
57°
24
77°
56°
25
73°
56°
26
72°
55°
27
72°
55°
28
73°
54°
29
73°
57°
30
74°
56°
31
77°
55°
1
76°
54°
2
70°
54°
3
71°
52°
4
72°
53°
5
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Clarksville
Clarksville's August 2026 forecast shows daily high temperatures ranging from 70° to 97°, with overnight lows between 52° and 71°. The average high for August is 78° with an average low of 57°. 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 Clarksville. See also: September | October | November.