S
M
T
W
T
F
S
28
72°
62°
29
75°
62°
30
76°
63°
1
78°
63°
2
82°
62°
3
87°
61°
4
82°
61°
5
83°
59°
6
83°
57°
7
83°
58°
8
84°
62°
9
84°
60°
10
83°
63°
11
84°
62°
12
85°
64°
13
89°
64°
14
89°
65°
15
90°
66°
16
91°
67°
17
87°
64°
18
86°
65°
19
87°
66°
20
87°
66°
21
88°
67°
22
89°
67°
23
89°
68°
24
88°
68°
25
90°
67°
26
89°
68°
27
89°
68°
28
88°
67°
29
89°
68°
30
89°
68°
31
88°
67°
1
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Rancho San Diego
Rancho San Diego's July 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 57° and 68°. The average high for July is 87° 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 July weather will actually feel in Rancho San Diego. See also: August | September | October.
