S
M
T
W
T
F
S
31
76°
58°
1
77°
59°
2
80°
60°
3
82°
61°
4
81°
58°
5
82°
59°
6
81°
58°
7
82°
58°
8
80°
59°
9
82°
60°
10
83°
60°
11
83°
56°
12
81°
54°
13
77°
56°
14
79°
60°
15
81°
62°
16
84°
65°
17
85°
65°
18
86°
64°
19
86°
65°
20
87°
65°
21
86°
62°
22
84°
62°
23
85°
59°
24
83°
58°
25
79°
55°
26
78°
59°
27
79°
61°
28
83°
59°
29
84°
59°
30
82°
60°
1
83°
60°
2
85°
61°
3
84°
61°
4
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Rancho San Diego
Rancho San Diego's June 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 54° and 65°. The average high for June is 82° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Rancho San Diego. See also: July | August | September.