S
M
T
W
T
F
S
26
90°
70°
27
89°
70°
28
91°
69°
29
87°
69°
30
88°
72°
31
94°
73°
1
93°
72°
2
92°
73°
3
93°
73°
4
93°
72°
5
92°
73°
6
90°
71°
7
85°
69°
8
86°
66°
9
86°
68°
10
85°
68°
11
85°
69°
12
87°
70°
13
86°
71°
14
88°
71°
15
89°
70°
16
91°
71°
17
92°
72°
18
92°
72°
19
91°
71°
20
91°
71°
21
85°
70°
22
85°
70°
23
83°
69°
24
83°
70°
25
84°
70°
26
85°
69°
27
87°
69°
28
92°
67°
29
91°
65°
30
88°
62°
31
87°
65°
1
91°
66°
2
90°
67°
3
90°
66°
4
84°
66°
5
84°
62°
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 83° to 94°, with overnight lows between 62° and 73°. The average high for August is 88° with an average low of 69°. 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.