S
M
T
W
T
F
S
31
81°
58°
1
78°
56°
2
77°
56°
3
79°
56°
4
82°
58°
5
78°
58°
6
77°
60°
7
76°
59°
8
78°
58°
9
83°
60°
10
84°
61°
11
84°
60°
12
84°
61°
13
83°
62°
14
82°
59°
15
83°
62°
16
83°
62°
17
84°
63°
18
84°
63°
19
83°
62°
20
84°
63°
21
84°
63°
22
85°
62°
23
85°
63°
24
84°
63°
25
85°
62°
26
84°
63°
27
85°
62°
28
83°
59°
29
81°
60°
30
83°
61°
1
85°
62°
2
86°
64°
3
86°
64°
4
85°
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 86°, with overnight lows between 56° and 64°. The average high for June is 83° with an average low of 61°. 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.