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