S
M
T
W
T
F
S
26
90°
75°
27
91°
75°
28
90°
74°
29
90°
74°
30
91°
76°
31
91°
76°
1
93°
75°
2
93°
76°
3
92°
76°
4
93°
74°
5
92°
75°
6
90°
74°
7
92°
75°
8
91°
76°
9
92°
76°
10
92°
75°
11
93°
75°
12
93°
74°
13
92°
75°
14
92°
73°
15
93°
73°
16
93°
74°
17
92°
73°
18
93°
74°
19
92°
73°
20
91°
72°
21
94°
73°
22
93°
72°
23
93°
71°
24
91°
72°
25
91°
73°
26
92°
73°
27
91°
72°
28
91°
73°
29
92°
73°
30
92°
72°
31
90°
72°
1
90°
73°
2
89°
72°
3
90°
71°
4
91°
71°
5
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South Bay
South Bay's August 2026 forecast shows daily high temperatures ranging from 89° to 94°, with overnight lows between 71° and 76°. The average high for August is 92° with an average low of 74°. 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 South Bay. See also: September | October | November.