S
M
T
W
T
F
S
30
91°
72°
31
94°
73°
1
93°
75°
2
93°
75°
3
91°
76°
4
93°
77°
5
93°
77°
6
93°
75°
7
90°
78°
8
90°
76°
9
94°
75°
10
93°
72°
11
93°
75°
12
92°
75°
13
90°
75°
14
93°
74°
15
92°
76°
16
92°
75°
17
92°
74°
18
91°
73°
19
90°
74°
20
91°
74°
21
88°
73°
22
88°
73°
23
89°
74°
24
90°
73°
25
88°
75°
26
89°
75°
27
87°
74°
28
87°
74°
29
88°
73°
30
87°
74°
1
87°
74°
2
88°
73°
3
88°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Charlotte
Port Charlotte's September 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 73° and 76°. The average high for September is 90° with an average low of 74°. 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 Port Charlotte. See also: October | November | December.