S
M
T
W
T
F
S
30
64°
39°
31
68°
43°
1
72°
45°
2
70°
47°
3
72°
47°
4
72°
44°
5
71°
39°
6
69°
44°
7
68°
45°
8
70°
46°
9
71°
47°
10
71°
46°
11
70°
44°
12
68°
46°
13
70°
45°
14
70°
45°
15
69°
40°
16
69°
33°
17
64°
34°
18
59°
40°
19
57°
32°
20
62°
35°
21
59°
32°
22
Hist. Avg.
61°
37°
23
Hist. Avg.
61°
37°
24
Hist. Avg.
61°
36°
25
Hist. Avg.
60°
36°
26
Hist. Avg.
60°
36°
27
Hist. Avg.
60°
35°
28
Hist. Avg.
60°
35°
29
Hist. Avg.
59°
35°
30
Hist. Avg.
59°
34°
1
Hist. Avg.
59°
34°
2
Hist. Avg.
58°
34°
3
Hist. Avg.
58°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Hamptons
Hamptons's September 2026 forecast shows daily high temperatures ranging from 57° to 72°, with overnight lows between 32° and 47°. The average high for September is 68° with an average low of 42°. 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.
