S
M
T
W
T
F
S
30
90°
74°
31
90°
75°
1
89°
77°
2
92°
76°
3
89°
77°
4
91°
77°
5
90°
78°
6
88°
76°
7
87°
77°
8
88°
78°
9
89°
77°
10
88°
76°
11
89°
79°
12
89°
78°
13
90°
77°
14
88°
78°
15
89°
77°
16
85°
77°
17
86°
76°
18
87°
78°
19
87°
77°
20
86°
77°
21
86°
76°
22
87°
77°
23
87°
77°
24
88°
76°
25
86°
77°
26
87°
77°
27
87°
76°
28
88°
77°
29
85°
76°
30
84°
75°
1
84°
76°
2
85°
76°
3
86°
75°
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 84° to 92°, with overnight lows between 75° and 79°. The average high for September is 87° with an average low of 77°. 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.
