S
M
T
W
T
F
S
27
85°
54°
28
85°
49°
29
88°
50°
30
93°
58°
1
94°
65°
2
79°
67°
3
72°
63°
4
82°
58°
5
82°
51°
6
85°
45°
7
85°
50°
8
89°
54°
9
88°
49°
10
67°
59°
11
80°
57°
12
90°
55°
13
91°
58°
14
90°
72°
15
89°
71°
16
76°
52°
17
63°
45°
18
71°
39°
19
74°
40°
20
78°
43°
21
79°
43°
22
80°
44°
23
77°
44°
24
79°
41°
25
80°
45°
26
77°
45°
27
79°
44°
28
80°
48°
29
81°
47°
30
81°
59°
31
77°
57°
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 77° to 81°, with overnight lows between 57° and 59°. The average high for October is 79° with an average low of 58°. 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.