S
M
T
W
T
F
S
30
79°
66°
31
75°
68°
1
71°
64°
2
72°
65°
3
80°
68°
4
83°
64°
5
78°
60°
6
73°
59°
7
78°
61°
8
80°
60°
9
73°
64°
10
79°
60°
11
73°
57°
12
75°
58°
13
75°
58°
14
74°
60°
15
79°
61°
16
78°
56°
17
73°
58°
18
68°
53°
19
72°
59°
20
73°
58°
21
70°
56°
22
68°
57°
23
69°
58°
24
73°
57°
25
69°
56°
26
71°
58°
27
72°
58°
28
72°
54°
29
64°
52°
30
65°
53°
1
64°
51°
2
63°
53°
3
62°
54°
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 62° to 83°, with overnight lows between 51° and 68°. The average high for September is 72° with an average low of 58°. 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.
