S
M
T
W
T
F
S
30
75°
50°
31
73°
51°
1
79°
46°
2
75°
54°
3
67°
53°
4
61°
46°
5
51°
47°
6
59°
49°
7
56°
52°
8
71°
45°
9
76°
52°
10
62°
42°
11
56°
40°
12
52°
42°
13
58°
36°
14
58°
42°
15
49°
43°
16
66°
39°
17
71°
40°
18
71°
41°
19
73°
41°
20
76°
43°
21
77°
48°
22
69°
42°
23
67°
39°
24
56°
43°
25
58°
37°
26
52°
35°
27
55°
37°
28
59°
38°
29
60°
41°
30
61°
38°
1
59°
40°
2
57°
34°
3
59°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hamptons
Hamptons's September 2026 forecast shows daily high temperatures ranging from 52° to 77°, with overnight lows between 34° and 48°. The average high for September is 61° with an average low of 39°. 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 Hamptons. See also: October | November | December.
