S
M
T
W
T
F
S
26
74°
56°
27
74°
57°
28
74°
60°
29
70°
59°
30
74°
58°
31
74°
58°
1
75°
59°
2
76°
60°
3
76°
61°
4
75°
60°
5
76°
59°
6
75°
58°
7
74°
57°
8
74°
56°
9
73°
55°
10
74°
57°
11
75°
58°
12
75°
58°
13
76°
57°
14
76°
59°
15
75°
59°
16
74°
56°
17
74°
59°
18
72°
55°
19
71°
54°
20
70°
54°
21
71°
58°
22
75°
61°
23
70°
60°
24
68°
59°
25
72°
59°
26
76°
57°
27
75°
58°
28
76°
59°
29
75°
61°
30
77°
60°
31
76°
58°
1
76°
58°
2
69°
54°
3
69°
56°
4
Hist. Avg.
75°
56°
5
Hist. Avg.
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South San Francisco
South San Francisco's August 2026 forecast shows daily high temperatures ranging from 68° to 77°, with overnight lows between 54° and 61°. The average high for August is 74° with an average low of 58°. 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 Francisco. See also: September | October | November.
