S
M
T
W
T
F
S
26
77°
66°
27
75°
64°
28
76°
68°
29
77°
65°
30
76°
66°
31
79°
66°
1
77°
66°
2
73°
66°
3
77°
66°
4
77°
65°
5
75°
68°
6
72°
68°
7
72°
68°
8
75°
68°
9
73°
68°
10
73°
68°
11
77°
68°
12
79°
64°
13
77°
70°
14
73°
68°
15
73°
68°
16
77°
68°
17
79°
64°
18
73°
70°
19
75°
68°
20
101°
50°
21
94°
50°
22
95°
53°
23
98°
54°
24
98°
53°
25
97°
54°
26
101°
61°
27
103°
63°
28
100°
62°
29
96°
65°
30
99°
64°
31
100°
65°
1
93°
63°
2
93°
62°
3
92°
61°
4
94°
62°
5
94°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sta. Isabel
Sta. Isabel's August 2026 forecast shows daily high temperatures ranging from 92° to 103°, with overnight lows between 50° and 65°. The average high for August is 97° with an average low of 59°. 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 Sta. Isabel. See also: September | October | November.