S
M
T
W
T
F
S
30
89°
65°
31
87°
72°
1
97°
70°
2
86°
71°
3
90°
71°
4
90°
72°
5
81°
67°
6
80°
64°
7
80°
62°
8
84°
59°
9
88°
71°
10
91°
72°
11
81°
67°
12
79°
71°
13
87°
70°
14
87°
68°
15
86°
68°
16
87°
66°
17
79°
62°
18
79°
60°
19
75°
56°
20
74°
59°
21
76°
56°
22
76°
58°
23
74°
62°
24
74°
61°
25
73°
57°
26
72°
58°
27
78°
61°
28
80°
60°
29
77°
58°
30
78°
60°
1
77°
59°
2
76°
58°
3
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cobb Island
Cobb Island's September 2026 forecast shows daily high temperatures ranging from 72° to 91°, with overnight lows between 56° and 72°. The average high for September is 79° with an average low of 62°. 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 Cobb Island. See also: October | November | December.
