S
M
T
W
T
F
S
30
81°
61°
31
81°
64°
1
72°
61°
2
75°
63°
3
84°
66°
4
84°
66°
5
82°
61°
6
73°
57°
7
82°
54°
8
82°
59°
9
79°
68°
10
86°
61°
11
77°
48°
12
76°
58°
13
77°
61°
14
78°
63°
15
77°
68°
16
81°
57°
17
72°
56°
18
74°
56°
19
70°
50°
20
69°
53°
21
71°
52°
22
70°
52°
23
66°
57°
24
69°
56°
25
64°
47°
26
64°
49°
27
65°
55°
28
70°
52°
29
63°
50°
30
63°
51°
1
64°
53°
2
64°
51°
3
67°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in East Hampton
East Hampton's September 2026 forecast shows daily high temperatures ranging from 63° to 86°, with overnight lows between 47° and 68°. The average high for September is 71° with an average low of 55°. 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 East Hampton. See also: October | November | December.
