S
M
T
W
T
F
S
30
89°
74°
31
94°
75°
1
92°
76°
2
92°
76°
3
91°
76°
4
92°
78°
5
91°
78°
6
91°
76°
7
90°
77°
8
88°
77°
9
95°
76°
10
94°
74°
11
93°
75°
12
92°
76°
13
90°
76°
14
92°
79°
15
91°
78°
16
91°
76°
17
89°
78°
18
89°
78°
19
89°
75°
20
90°
74°
21
88°
75°
22
89°
74°
23
90°
74°
24
89°
75°
25
90°
73°
26
88°
75°
27
86°
75°
28
85°
75°
29
84°
74°
30
86°
75°
1
86°
75°
2
87°
73°
3
86°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Myers Beach
Fort Myers Beach's September 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 73° and 79°. The average high for September is 88° with an average low of 75°. 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 Fort Myers Beach. See also: October | November | December.
