S
M
T
W
T
F
S
30
90°
75°
31
90°
78°
1
89°
78°
2
91°
75°
3
91°
77°
4
92°
79°
5
93°
75°
6
93°
77°
7
91°
72°
8
90°
80°
9
93°
81°
10
93°
79°
11
92°
80°
12
91°
78°
13
90°
79°
14
91°
77°
15
90°
78°
16
91°
77°
17
90°
78°
18
91°
76°
19
90°
77°
20
88°
76°
21
89°
77°
22
88°
75°
23
86°
75°
24
86°
78°
25
87°
78°
26
85°
77°
27
86°
78°
28
85°
78°
29
87°
77°
30
86°
76°
1
86°
77°
2
87°
78°
3
87°
77°
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 85° to 93°, with overnight lows between 75° and 81°. The average high for September is 89° with an average low of 78°. 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.
