S
M
T
W
T
F
S
27
81°
54°
28
82°
57°
29
86°
57°
30
86°
57°
1
90°
59°
2
90°
68°
3
86°
70°
4
68°
61°
5
72°
59°
6
77°
57°
7
79°
54°
8
77°
52°
9
78°
65°
10
70°
66°
11
83°
61°
12
84°
58°
13
86°
61°
14
88°
59°
15
80°
60°
16
79°
58°
17
77°
50°
18
73°
51°
19
72°
50°
20
71°
49°
21
69°
47°
22
72°
48°
23
68°
47°
24
67°
45°
25
66°
52°
26
67°
51°
27
73°
48°
28
72°
41°
29
64°
40°
30
64°
46°
31
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Hartsville
Hartsville's October 2026 forecast shows daily high temperatures ranging from 64° to 88°, with overnight lows between 40° and 66°. The average high for October is 74° with an average low of 52°. 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 Hartsville. See also: November | December | January.