S
M
T
W
T
F
S
31
79°
47°
1
76°
52°
2
76°
53°
3
76°
55°
4
82°
55°
5
84°
58°
6
86°
55°
7
86°
54°
8
84°
57°
9
90°
58°
10
89°
59°
11
89°
56°
12
83°
52°
13
79°
55°
14
78°
55°
15
79°
52°
16
73°
50°
17
81°
51°
18
85°
56°
19
84°
56°
20
86°
55°
21
76°
54°
22
84°
57°
23
85°
55°
24
85°
57°
25
84°
57°
26
83°
56°
27
81°
57°
28
83°
56°
29
83°
56°
30
85°
54°
1
83°
56°
2
87°
57°
3
87°
59°
4
86°
58°
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 73° to 90°, with overnight lows between 50° and 59°. The average high for June is 84° with an average low of 56°. 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.
