S
M
T
W
T
F
S
30
91°
78°
31
89°
78°
1
89°
76°
2
88°
77°
3
89°
76°
4
90°
77°
5
89°
77°
6
90°
76°
7
91°
77°
8
90°
76°
9
90°
77°
10
89°
76°
11
89°
77°
12
90°
77°
13
90°
78°
14
89°
79°
15
90°
79°
16
90°
77°
17
88°
76°
18
88°
77°
19
89°
77°
20
88°
78°
21
87°
77°
22
88°
77°
23
89°
76°
24
90°
77°
25
88°
76°
26
87°
75°
27
88°
75°
28
89°
74°
29
90°
75°
30
90°
75°
1
Hist. Avg.
88°
76°
2
Hist. Avg.
88°
76°
3
Hist. Avg.
88°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lauderdale-by-the-Sea
Lauderdale-by-the-Sea's September 2026 forecast shows daily high temperatures ranging from 87° to 91°, with overnight lows between 74° and 79°. 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 Lauderdale-by-the-Sea. See also: October | November | December.