S
M
T
W
T
F
S
28
74°
55°
29
74°
55°
30
73°
55°
1
71°
55°
2
71°
56°
3
70°
55°
4
69°
54°
5
70°
56°
6
68°
56°
7
62°
55°
8
65°
54°
9
69°
55°
10
66°
54°
11
67°
53°
12
76°
58°
13
79°
60°
14
75°
59°
15
73°
57°
16
70°
55°
17
68°
56°
18
66°
55°
19
67°
57°
20
68°
58°
21
69°
57°
22
70°
56°
23
70°
57°
24
71°
57°
25
73°
58°
26
74°
57°
27
72°
56°
28
70°
58°
29
69°
56°
30
68°
54°
31
70°
54°
1
69°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in South San Francisco
South San Francisco's July 2026 forecast shows daily high temperatures ranging from 66° to 75°, with overnight lows between 54° and 59°. The average high for July is 70° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in South San Francisco. See also: August | September | October.
