S
M
T
W
T
F
S
30
91°
76°
31
91°
77°
1
90°
77°
2
91°
76°
3
90°
77°
4
90°
76°
5
91°
76°
6
90°
76°
7
89°
77°
8
90°
77°
9
89°
76°
10
88°
77°
11
89°
76°
12
88°
76°
13
88°
77°
14
89°
75°
15
90°
76°
16
91°
76°
17
89°
75°
18
89°
75°
19
90°
74°
20
90°
76°
21
91°
77°
22
91°
77°
23
90°
76°
24
88°
75°
25
89°
74°
26
89°
75°
27
88°
74°
28
87°
73°
29
86°
74°
30
86°
73°
1
87°
74°
2
86°
74°
3
86°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Palm Beach
North Palm Beach's September 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 73° and 77°. The average high for September is 89° 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 North Palm Beach. See also: October | November | December.