S
M
T
W
T
F
S
31
N/A
1
74°
47°
2
78°
50°
3
80°
58°
4
82°
63°
5
81°
63°
6
80°
61°
7
84°
62°
8
82°
61°
9
81°
59°
10
82°
59°
11
81°
57°
12
76°
56°
13
77°
57°
14
79°
53°
15
72°
50°
16
71°
50°
17
72°
51°
18
74°
57°
19
76°
55°
20
79°
59°
21
76°
59°
22
78°
60°
23
79°
57°
24
76°
54°
25
77°
61°
26
83°
60°
27
78°
57°
28
75°
54°
29
75°
53°
30
76°
54°
1
79°
62°
2
81°
62°
3
80°
60°
4
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Castle Rock
Castle Rock's June 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 47° and 63°. The average high for June is 78° with an average low of 57°. 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 Castle Rock. See also: July | August | September.
