S
M
T
W
T
F
S
30
95°
74°
31
93°
73°
1
84°
75°
2
88°
75°
3
92°
74°
4
94°
72°
5
91°
74°
6
95°
71°
7
96°
75°
8
95°
73°
9
94°
74°
10
93°
74°
11
87°
72°
12
92°
76°
13
92°
74°
14
92°
77°
15
94°
77°
16
92°
77°
17
93°
74°
18
91°
71°
19
92°
72°
20
93°
74°
21
92°
74°
22
94°
75°
23
92°
72°
24
91°
71°
25
92°
67°
26
88°
69°
27
89°
65°
28
88°
67°
29
89°
66°
30
87°
66°
1
86°
67°
2
82°
64°
3
85°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Intracoastal City
Intracoastal City's September 2026 forecast shows daily high temperatures ranging from 82° to 94°, with overnight lows between 64° and 75°. The average high for September is 89° with an average low of 69°. 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 Intracoastal City. See also: October | November | December.