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