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
92°
76°
11
91°
77°
12
91°
74°
13
93°
75°
14
92°
76°
15
91°
75°
16
92°
74°
17
91°
75°
18
90°
74°
19
89°
74°
20
90°
75°
21
90°
74°
22
89°
74°
23
88°
75°
24
87°
74°
25
87°
76°
26
88°
76°
27
86°
75°
28
86°
75°
29
87°
74°
30
86°
75°
1
86°
75°
2
87°
74°
3
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Myers
Fort Myers's September 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 74° and 77°. The average high for September is 89° 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. See also: October | November | December.
