S
M
T
W
T
F
S
27
84°
61°
28
84°
62°
29
83°
61°
30
84°
61°
1
84°
62°
2
83°
61°
3
83°
61°
4
84°
60°
5
82°
60°
6
82°
59°
7
81°
57°
8
78°
50°
9
69°
47°
10
69°
52°
11
77°
55°
12
79°
56°
13
78°
55°
14
79°
56°
15
79°
57°
16
78°
54°
17
73°
53°
18
73°
54°
19
72°
54°
20
72°
53°
21
71°
47°
22
63°
43°
23
62°
40°
24
62°
44°
25
67°
51°
26
63°
38°
27
63°
41°
28
67°
48°
29
68°
49°
30
72°
52°
31
74°
47°
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 62° to 84°, with overnight lows between 38° and 62°. The average high for October is 75° with an average low of 53°. 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.