S
M
T
W
T
F
S
30
90°
76°
31
91°
77°
1
90°
76°
2
88°
76°
3
89°
76°
4
87°
75°
5
87°
76°
6
90°
75°
7
91°
75°
8
89°
76°
9
89°
76°
10
88°
75°
11
87°
75°
12
87°
76°
13
88°
75°
14
88°
76°
15
87°
75°
16
89°
76°
17
90°
76°
18
89°
75°
19
88°
77°
20
89°
76°
21
90°
77°
22
89°
76°
23
88°
77°
24
87°
78°
25
86°
77°
26
88°
75°
27
86°
74°
28
87°
77°
29
88°
77°
30
Hist. Avg.
87°
75°
1
Hist. Avg.
87°
75°
2
Hist. Avg.
87°
75°
3
Hist. Avg.
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lake Worth Beach
Lake Worth Beach's September 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 74° and 78°. 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 Lake Worth Beach. See also: October | November | December.