S
M
T
W
T
F
S
28
67°
56°
29
64°
54°
30
63°
53°
1
66°
53°
2
74°
55°
3
76°
58°
4
75°
56°
5
82°
55°
6
86°
50°
7
78°
54°
8
75°
55°
9
79°
53°
10
73°
55°
11
71°
52°
12
78°
50°
13
82°
52°
14
84°
53°
15
78°
55°
16
82°
54°
17
84°
55°
18
85°
56°
19
86°
55°
20
86°
56°
21
85°
55°
22
83°
54°
23
84°
56°
24
76°
50°
25
83°
54°
26
83°
55°
27
84°
58°
28
84°
58°
29
83°
52°
30
82°
56°
31
76°
51°
1
76°
51°
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 71° to 86°, with overnight lows between 50° and 58°. The average high for July is 81° with an average low of 54°. 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.