S
M
T
W
T
F
S
28
70°
64°
29
71°
65°
30
73°
64°
1
72°
64°
2
73°
65°
3
74°
66°
4
77°
65°
5
75°
66°
6
75°
66°
7
75°
65°
8
74°
65°
9
71°
65°
10
74°
64°
11
75°
66°
12
76°
67°
13
77°
67°
14
80°
66°
15
80°
67°
16
81°
69°
17
77°
71°
18
79°
70°
19
79°
69°
20
78°
68°
21
76°
69°
22
78°
70°
23
80°
70°
24
81°
71°
25
76°
68°
26
78°
70°
27
79°
70°
28
78°
70°
29
78°
69°
30
75°
67°
31
75°
66°
1
76°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in San Diego
San Diego's July 2026 forecast shows daily high temperatures ranging from 75° to 81°, with overnight lows between 66° and 71°. The average high for July is 78° with an average low of 69°. 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 San Diego. See also: August | September | October.
