S
M
T
W
T
F
S
30
90°
76°
31
89°
76°
1
91°
76°
2
90°
75°
3
94°
79°
4
94°
79°
5
89°
76°
6
93°
75°
7
91°
75°
8
91°
74°
9
89°
78°
10
91°
79°
11
88°
76°
12
91°
76°
13
91°
74°
14
90°
74°
15
91°
78°
16
87°
79°
17
87°
77°
18
88°
76°
19
89°
74°
20
88°
74°
21
88°
76°
22
87°
77°
23
88°
76°
24
89°
77°
25
89°
75°
26
87°
74°
27
88°
76°
28
89°
75°
29
87°
76°
30
85°
78°
1
85°
78°
2
87°
78°
3
88°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Palm Beach
West Palm Beach's September 2026 forecast shows daily high temperatures ranging from 85° to 89°, with overnight lows between 74° and 79°. 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 West Palm Beach. See also: October | November | December.
