S
M
T
W
T
F
S
27
78°
61°
28
82°
60°
29
80°
59°
30
76°
52°
1
75°
49°
2
74°
48°
3
72°
48°
4
71°
47°
5
71°
47°
6
72°
48°
7
72°
49°
8
73°
48°
9
74°
48°
10
73°
47°
11
71°
46°
12
72°
52°
13
71°
53°
14
70°
54°
15
Hist. Avg.
72°
47°
16
Hist. Avg.
72°
47°
17
Hist. Avg.
71°
47°
18
Hist. Avg.
71°
46°
19
Hist. Avg.
70°
46°
20
Hist. Avg.
70°
46°
21
Hist. Avg.
70°
45°
22
Hist. Avg.
69°
45°
23
Hist. Avg.
69°
44°
24
Hist. Avg.
68°
44°
25
Hist. Avg.
68°
44°
26
Hist. Avg.
68°
43°
27
Hist. Avg.
67°
43°
28
Hist. Avg.
67°
43°
29
Hist. Avg.
66°
42°
30
Hist. Avg.
66°
42°
31
Hist. Avg.
66°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Clarksville
Clarksville's October 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 46° and 61°. The average high for October is 74° with an average low of 51°. 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.