S
M
T
W
T
F
S
29
78°
57°
30
70°
60°
31
70°
65°
1
71°
62°
2
68°
61°
3
72°
56°
4
81°
52°
5
77°
53°
6
74°
60°
7
69°
60°
8
80°
57°
9
75°
59°
10
74°
59°
11
69°
56°
12
66°
52°
13
65°
56°
14
67°
56°
15
70°
59°
16
69°
60°
17
68°
58°
18
68°
58°
19
69°
59°
20
71°
60°
21
70°
57°
22
65°
57°
23
66°
55°
24
65°
55°
25
65°
53°
26
66°
55°
27
65°
54°
28
64°
54°
29
65°
53°
30
65°
54°
1
66°
54°
2
68°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Castle
Castle's April 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 52° and 60°. The average high for April is 68° with an average low of 56°. 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. See also: May | June | July.
