S
M
T
W
T
F
S
31
88°
54°
1
85°
57°
2
83°
54°
3
89°
54°
4
88°
55°
5
86°
55°
6
82°
57°
7
81°
57°
8
81°
54°
9
85°
59°
10
92°
59°
11
92°
62°
12
94°
62°
13
90°
62°
14
N/A
15
93°
56°
16
90°
55°
17
90°
53°
18
85°
54°
19
84°
54°
20
82°
55°
21
85°
58°
22
88°
59°
23
91°
61°
24
93°
63°
25
97°
64°
26
98°
64°
27
96°
63°
28
91°
60°
29
93°
64°
30
92°
64°
1
93°
63°
2
91°
64°
3
93°
65°
4
94°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Castaic Junction
Castaic Junction's June 2026 forecast shows daily high temperatures ranging from 82° to 98°, with overnight lows between 53° and 66°. The average high for June is 91° 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 Castaic Junction. See also: July | August | September.
