S
M
T
W
T
F
S
30
90°
74°
31
90°
75°
1
89°
77°
2
90°
77°
3
90°
77°
4
90°
79°
5
88°
79°
6
88°
79°
7
86°
77°
8
88°
73°
9
90°
77°
10
88°
77°
11
90°
77°
12
90°
77°
13
86°
73°
14
90°
77°
15
90°
79°
16
90°
77°
17
90°
73°
18
90°
73°
19
88°
70°
20
86°
73°
21
88°
72°
22
88°
73°
23
88°
73°
24
86°
73°
25
81°
68°
26
79°
64°
27
81°
64°
28
82°
68°
29
86°
73°
30
88°
73°
1
89°
75°
2
88°
75°
3
88°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Harbor Bluffs
Harbor Bluffs's September 2026 forecast shows daily high temperatures ranging from 88° to 89°, with overnight lows between 75° and 77°. 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 Harbor Bluffs. See also: October | November | December.
