S
M
T
W
T
F
S
30
77°
58°
31
80°
58°
1
81°
59°
2
81°
58°
3
80°
51°
4
79°
49°
5
72°
52°
6
73°
56°
7
76°
56°
8
78°
55°
9
79°
56°
10
78°
54°
11
77°
51°
12
77°
52°
13
76°
55°
14
77°
56°
15
77°
54°
16
78°
47°
17
76°
54°
18
73°
52°
19
75°
49°
20
72°
45°
21
67°
43°
22
67°
48°
23
68°
46°
24
72°
43°
25
66°
42°
26
65°
41°
27
66°
47°
28
71°
48°
29
72°
43°
30
67°
42°
1
64°
44°
2
64°
39°
3
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Hampton
South Hampton's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 39° and 59°. The average high for September is 73° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in South Hampton. See also: October | November | December.
