S
M
T
W
T
F
S
27
80°
51°
28
78°
56°
29
81°
59°
30
84°
54°
1
87°
53°
2
90°
53°
3
70°
55°
4
66°
56°
5
76°
53°
6
70°
44°
7
77°
39°
8
86°
51°
9
N/A
10
66°
61°
11
77°
61°
12
80°
53°
13
85°
60°
14
86°
55°
15
73°
53°
16
75°
53°
17
72°
43°
18
69°
41°
19
65°
40°
20
68°
42°
21
70°
41°
22
66°
43°
23
64°
42°
24
63°
37°
25
63°
37°
26
68°
42°
27
72°
42°
28
66°
35°
29
61°
35°
30
61°
36°
31
68°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in South Boston
South Boston's October 2026 forecast shows daily high temperatures ranging from 61° to 86°, with overnight lows between 35° and 61°. The average high for October is 70° with an average low of 45°. 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 South Boston. See also: November | December | January.