S
M
T
W
T
F
S
27
81°
48°
28
82°
48°
29
85°
49°
30
89°
52°
1
88°
66°
2
88°
68°
3
84°
69°
4
75°
61°
5
79°
57°
6
78°
52°
7
75°
47°
8
79°
51°
9
80°
50°
10
72°
51°
11
71°
49°
12
74°
47°
13
75°
49°
14
74°
48°
15
71°
45°
16
73°
49°
17
74°
51°
18
75°
49°
19
76°
48°
20
71°
40°
21
66°
39°
22
65°
38°
23
67°
39°
24
70°
40°
25
72°
45°
26
74°
45°
27
75°
43°
28
67°
43°
29
63°
41°
30
69°
39°
31
70°
40°
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 88°, with overnight lows between 38° and 69°. The average high for October is 74° with an average low of 48°. 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.