S
M
T
W
T
F
S
26
92°
73°
27
93°
73°
28
95°
77°
29
89°
72°
30
87°
68°
31
87°
64°
1
85°
70°
2
77°
70°
3
86°
68°
4
89°
67°
5
91°
68°
6
92°
70°
7
93°
72°
8
88°
68°
9
91°
66°
10
93°
72°
11
94°
75°
12
95°
77°
13
96°
80°
14
97°
75°
15
98°
76°
16
100°
75°
17
93°
73°
18
91°
66°
19
83°
65°
20
90°
69°
21
91°
70°
22
91°
66°
23
87°
62°
24
86°
59°
25
90°
65°
26
85°
65°
27
89°
67°
28
91°
64°
29
93°
64°
30
95°
73°
31
96°
73°
1
98°
75°
2
99°
76°
3
99°
76°
4
98°
73°
5
98°
71°
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 95° to 99°, with overnight lows between 71° and 76°. The average high for August is 98° with an average low of 74°. 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.