S
M
T
W
T
F
S
27
72°
45°
28
74°
48°
29
78°
47°
30
81°
57°
1
86°
61°
2
72°
56°
3
70°
46°
4
75°
46°
5
67°
41°
6
67°
42°
7
75°
47°
8
74°
53°
9
73°
50°
10
75°
57°
11
76°
58°
12
73°
57°
13
69°
49°
14
67°
49°
15
68°
47°
16
67°
44°
17
70°
49°
18
70°
50°
19
59°
42°
20
63°
45°
21
60°
45°
22
57°
40°
23
61°
45°
24
60°
41°
25
55°
38°
26
55°
40°
27
56°
36°
28
55°
39°
29
61°
47°
30
66°
47°
31
66°
48°
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 55° to 76°, with overnight lows between 36° and 58°. The average high for October is 66° with an average low of 46°. 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.