S
M
T
W
T
F
S
27
66°
55°
28
72°
55°
29
72°
53°
30
65°
51°
1
64°
52°
2
66°
53°
3
71°
53°
4
70°
54°
5
71°
53°
6
64°
53°
7
67°
54°
8
70°
51°
9
69°
50°
10
61°
49°
11
66°
45°
12
60°
49°
13
64°
50°
14
68°
51°
15
68°
50°
16
65°
50°
17
68°
46°
18
58°
43°
19
57°
48°
20
61°
49°
21
64°
49°
22
65°
46°
23
56°
41°
24
54°
43°
25
58°
47°
26
67°
43°
27
63°
36°
28
56°
37°
29
57°
41°
30
60°
45°
31
63°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Southampton
Southampton's October 2026 forecast shows daily high temperatures ranging from 54° to 72°, with overnight lows between 36° and 55°. The average high for October is 64° 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 Southampton. See also: November | December | January.