S
M
T
W
T
F
S
31
81°
58°
1
75°
59°
2
79°
59°
3
80°
59°
4
82°
61°
5
77°
60°
6
77°
59°
7
75°
57°
8
79°
59°
9
82°
58°
10
83°
60°
11
83°
60°
12
84°
61°
13
83°
62°
14
82°
59°
15
84°
63°
16
84°
62°
17
83°
63°
18
85°
63°
19
84°
62°
20
84°
63°
21
85°
63°
22
85°
62°
23
84°
63°
24
85°
63°
25
85°
62°
26
84°
63°
27
85°
63°
28
83°
60°
29
82°
60°
30
84°
61°
1
85°
62°
2
86°
65°
3
86°
64°
4
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in El Cajon
El Cajon's June 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 57° and 65°. 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 El Cajon. See also: July | August | September.