S
M
T
W
T
F
S
29
41°
23°
30
41°
20°
31
45°
19°
1
43°
25°
2
52°
30°
3
54°
29°
4
53°
33°
5
58°
34°
6
54°
35°
7
47°
27°
8
55°
24°
9
60°
22°
10
67°
24°
11
64°
33°
12
60°
30°
13
54°
34°
14
51°
35°
15
46°
26°
16
49°
20°
17
56°
33°
18
64°
24°
19
67°
48°
20
72°
35°
21
67°
33°
22
57°
28°
23
59°
29°
24
58°
28°
25
63°
29°
26
64°
30°
27
64°
32°
28
67°
34°
29
65°
35°
30
64°
35°
1
61°
31°
2
61°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Castle Rock
Castle Rock's April 2026 forecast shows daily high temperatures ranging from 57° to 72°, with overnight lows between 28° and 35°. The average high for April is 63° with an average low of 32°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Castle Rock. See also: May | June | July.
