S
M
T
W
T
F
S
28
81°
63°
29
93°
72°
30
90°
79°
1
91°
77°
2
84°
68°
3
81°
67°
4
77°
65°
5
81°
59°
6
82°
62°
7
84°
65°
8
85°
65°
9
80°
62°
10
80°
61°
11
81°
60°
12
81°
62°
13
82°
64°
14
83°
63°
15
82°
61°
16
81°
60°
17
76°
55°
18
77°
62°
19
77°
62°
20
82°
61°
21
84°
62°
22
83°
63°
23
84°
63°
24
82°
62°
25
84°
63°
26
84°
63°
27
83°
62°
28
83°
64°
29
84°
62°
30
83°
63°
31
80°
61°
1
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Castle Rock
Castle Rock's July 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 55° and 67°. The average high for July is 81° with an average low of 62°. 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.