S
M
T
W
T
F
S
30
91°
74°
31
94°
75°
1
94°
74°
2
93°
75°
3
93°
75°
4
92°
76°
5
93°
75°
6
91°
75°
7
91°
74°
8
92°
74°
9
93°
75°
10
93°
74°
11
91°
73°
12
91°
73°
13
93°
74°
14
93°
74°
15
92°
72°
16
90°
73°
17
91°
74°
18
92°
73°
19
92°
73°
20
90°
74°
21
91°
74°
22
90°
73°
23
89°
73°
24
89°
72°
25
90°
71°
26
89°
72°
27
89°
73°
28
90°
72°
29
89°
71°
30
88°
73°
1
88°
71°
2
90°
71°
3
90°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Charlotte Harbor
Charlotte Harbor's September 2026 forecast shows daily high temperatures ranging from 88° to 94°, with overnight lows between 71° and 76°. The average high for September is 91° with an average low of 73°. 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 Charlotte Harbor. See also: October | November | December.
