S
M
T
W
T
F
S
30
97°
64°
31
97°
72°
1
99°
74°
2
100°
74°
3
101°
76°
4
98°
75°
5
99°
74°
6
97°
73°
7
96°
73°
8
95°
74°
9
97°
75°
10
93°
74°
11
90°
66°
12
89°
65°
13
87°
64°
14
85°
63°
15
80°
68°
16
81°
67°
17
82°
66°
18
85°
67°
19
87°
67°
20
86°
66°
21
86°
66°
22
85°
65°
23
86°
65°
24
87°
64°
25
86°
65°
26
87°
63°
27
86°
64°
28
86°
64°
29
85°
63°
30
86°
64°
1
85°
63°
2
85°
63°
3
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Deans Island
Deans Island's September 2026 forecast shows daily high temperatures ranging from 80° to 101°, with overnight lows between 62° and 76°. The average high for September is 89° with an average low of 68°. 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 Deans Island. See also: October | November | December.
