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