S
M
T
W
T
F
S
30
79°
58°
31
77°
67°
1
78°
66°
2
75°
65°
3
84°
70°
4
83°
67°
5
79°
62°
6
72°
57°
7
79°
53°
8
79°
59°
9
79°
60°
10
86°
70°
11
77°
59°
12
76°
53°
13
76°
66°
14
75°
54°
15
70°
58°
16
77°
66°
17
80°
68°
18
79°
66°
19
74°
65°
20
70°
60°
21
72°
58°
22
68°
59°
23
68°
61°
24
69°
60°
25
71°
59°
26
72°
55°
27
67°
61°
28
74°
60°
29
74°
58°
30
68°
56°
1
66°
55°
2
69°
59°
3
72°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sound Beach
Sound Beach's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 54° and 68°. The average high for September is 72° with an average low of 60°. 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 Sound Beach. See also: October | November | December.