S
M
T
W
T
F
S
29
64°
34°
30
61°
37°
31
54°
39°
1
54°
37°
2
39°
32°
3
54°
27°
4
57°
30°
5
63°
36°
6
72°
37°
7
66°
37°
8
64°
36°
9
70°
42°
10
70°
40°
11
58°
39°
12
54°
32°
13
48°
30°
14
54°
30°
15
54°
35°
16
52°
31°
17
55°
32°
18
54°
31°
19
54°
30°
20
55°
31°
21
54°
30°
22
57°
31°
23
51°
26°
24
49°
26°
25
50°
30°
26
50°
28°
27
52°
30°
28
51°
27°
29
51°
27°
30
52°
28°
1
53°
28°
2
54°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Castle Rocks
Castle Rocks's April 2026 forecast shows daily high temperatures ranging from 48° to 70°, with overnight lows between 26° and 42°. The average high for April is 54° with an average low of 31°. 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 Rocks. See also: May | June | July.