S
M
T
W
T
F
S
27
82°
50°
28
84°
54°
29
86°
57°
30
86°
63°
1
88°
63°
2
88°
68°
3
82°
73°
4
81°
72°
5
72°
68°
6
75°
63°
7
79°
63°
8
79°
63°
9
78°
68°
10
74°
71°
11
82°
65°
12
84°
62°
13
85°
59°
14
82°
57°
15
72°
52°
16
76°
55°
17
78°
55°
18
76°
51°
19
72°
48°
20
75°
52°
21
74°
51°
22
78°
56°
23
69°
49°
24
69°
48°
25
68°
54°
26
69°
52°
27
75°
49°
28
74°
44°
29
66°
43°
30
67°
52°
31
71°
52°
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 66° to 85°, with overnight lows between 43° and 71°. The average high for October is 75° with an average low of 55°. 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.