S
M
T
W
T
F
S
27
81°
48°
28
82°
48°
29
85°
49°
30
89°
52°
1
89°
59°
2
89°
63°
3
85°
67°
4
73°
68°
5
81°
60°
6
81°
57°
7
83°
55°
8
86°
58°
9
82°
62°
10
68°
63°
11
73°
57°
12
81°
52°
13
83°
53°
14
78°
50°
15
77°
53°
16
76°
52°
17
71°
48°
18
69°
46°
19
69°
46°
20
73°
45°
21
70°
50°
22
71°
48°
23
66°
42°
24
65°
40°
25
65°
44°
26
70°
45°
27
72°
45°
28
69°
39°
29
63°
36°
30
63°
40°
31
68°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Summerville
Summerville's October 2026 forecast shows daily high temperatures ranging from 63° to 86°, with overnight lows between 36° and 63°. The average high for October is 72° with an average low of 49°. 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 Summerville. See also: November | December | January.