S
M
T
W
T
F
S
28
91°
56°
29
90°
54°
30
90°
54°
1
88°
53°
2
88°
58°
3
90°
55°
4
87°
57°
5
94°
63°
6
94°
65°
7
96°
64°
8
92°
60°
9
89°
59°
10
89°
55°
11
94°
60°
12
95°
64°
13
95°
65°
14
94°
62°
15
N/A
16
87°
59°
17
88°
59°
18
91°
59°
19
94°
61°
20
91°
59°
21
85°
58°
22
83°
58°
23
84°
57°
24
81°
58°
25
83°
60°
26
82°
60°
27
84°
58°
28
82°
60°
29
86°
59°
30
87°
60°
31
84°
60°
1
86°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Castle Rock
Castle Rock's July 2026 forecast shows daily high temperatures ranging from 81° to 94°, with overnight lows between 57° and 61°. The average high for July is 86° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Castle Rock. See also: August | September | October.