S
M
T
W
T
F
S
26
77°
64°
27
85°
62°
28
83°
67°
29
79°
60°
30
83°
56°
31
83°
60°
1
78°
68°
2
79°
66°
3
80°
60°
4
83°
56°
5
86°
64°
6
86°
65°
7
84°
67°
8
88°
69°
9
88°
66°
10
89°
71°
11
79°
65°
12
69°
63°
13
86°
63°
14
84°
70°
15
87°
72°
16
91°
71°
17
84°
62°
18
81°
64°
19
84°
64°
20
75°
58°
21
76°
56°
22
75°
59°
23
78°
62°
24
80°
62°
25
83°
65°
26
80°
64°
27
79°
59°
28
78°
60°
29
77°
57°
30
78°
59°
31
77°
59°
1
80°
64°
2
81°
62°
3
76°
58°
4
74°
55°
5
75°
56°
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 74° to 91°, with overnight lows between 55° and 72°. The average high for August is 80° 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 Clarksville. See also: September | October | November.