S
M
T
W
T
F
S
26
76°
67°
27
76°
68°
28
77°
67°
29
77°
67°
30
76°
66°
31
74°
67°
1
75°
67°
2
77°
65°
3
75°
61°
4
72°
62°
5
73°
61°
6
72°
62°
7
73°
64°
8
73°
64°
9
75°
65°
10
75°
67°
11
74°
67°
12
77°
65°
13
76°
63°
14
74°
63°
15
73°
64°
16
73°
66°
17
74°
67°
18
76°
69°
19
78°
70°
20
78°
68°
21
77°
64°
22
76°
64°
23
73°
67°
24
75°
68°
25
78°
67°
26
78°
66°
27
77°
64°
28
74°
64°
29
74°
64°
30
74°
62°
31
76°
67°
1
76°
64°
2
Hist. Avg.
76°
64°
3
Hist. Avg.
76°
64°
4
Hist. Avg.
76°
64°
5
Hist. Avg.
76°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South San Diego
South San Diego's August 2026 forecast shows daily high temperatures ranging from 72° to 78°, with overnight lows between 61° and 70°. The average high for August is 75° with an average low of 65°. 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 San Diego. See also: September | October | November.
