S
M
T
W
T
F
S
29
84°
57°
30
89°
64°
31
89°
68°
1
91°
71°
2
87°
70°
3
85°
72°
4
79°
59°
5
66°
52°
6
75°
49°
7
78°
49°
8
81°
55°
9
82°
65°
10
82°
66°
11
84°
69°
12
80°
70°
13
90°
71°
14
88°
71°
15
86°
70°
16
89°
69°
17
90°
71°
18
76°
56°
19
70°
55°
20
62°
58°
21
81°
67°
22
83°
68°
23
85°
69°
24
84°
67°
25
84°
61°
26
83°
59°
27
81°
62°
28
82°
63°
29
81°
64°
30
85°
66°
1
88°
67°
2
87°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Castle Hills
Castle Hills's April 2026 forecast shows daily high temperatures ranging from 62° to 90°, with overnight lows between 55° and 71°. The average high for April is 82° with an average low of 64°. 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 Hills. See also: May | June | July.