S
M
T
W
T
F
S
26
93°
78°
27
92°
77°
28
93°
79°
29
92°
79°
30
92°
79°
31
91°
77°
1
92°
76°
2
89°
77°
3
88°
78°
4
89°
77°
5
88°
77°
6
89°
78°
7
88°
79°
8
86°
77°
9
87°
78°
10
87°
78°
11
86°
77°
12
87°
77°
13
86°
78°
14
86°
78°
15
86°
78°
16
86°
76°
17
87°
79°
18
87°
79°
19
88°
78°
20
86°
78°
21
88°
79°
22
89°
78°
23
88°
79°
24
88°
79°
25
89°
78°
26
88°
78°
27
87°
77°
28
87°
78°
29
88°
78°
30
87°
77°
31
87°
78°
1
88°
78°
2
85°
77°
3
86°
78°
4
87°
78°
5
88°
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 85° to 93°, with overnight lows between 76° and 79°. The average high for August is 88° with an average low of 78°. 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.