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