S
M
T
W
T
F
S
27
91°
66°
28
91°
66°
29
93°
68°
30
93°
73°
1
82°
70°
2
82°
70°
3
75°
68°
4
84°
68°
5
88°
57°
6
86°
55°
7
90°
55°
8
92°
59°
9
94°
59°
10
92°
59°
11
91°
64°
12
95°
69°
13
91°
72°
14
90°
70°
15
87°
61°
16
74°
54°
17
69°
52°
18
69°
53°
19
72°
54°
20
75°
57°
21
74°
50°
22
70°
53°
23
67°
48°
24
67°
47°
25
69°
47°
26
71°
51°
27
75°
52°
28
72°
52°
29
68°
49°
30
69°
53°
31
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Clarksville
Clarksville's October 2026 forecast shows daily high temperatures ranging from 67° to 95°, with overnight lows between 47° and 72°. The average high for October is 78° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Clarksville. See also: November | December | January.