S
M
T
W
T
F
S
29
89°
58°
30
92°
64°
31
93°
66°
1
95°
68°
2
89°
65°
3
93°
71°
4
79°
64°
5
63°
50°
6
74°
46°
7
84°
53°
8
85°
54°
9
87°
66°
10
91°
64°
11
75°
61°
12
87°
57°
13
90°
61°
14
87°
64°
15
88°
62°
16
92°
64°
17
91°
67°
18
79°
60°
19
67°
55°
20
77°
54°
21
90°
55°
22
93°
64°
23
93°
65°
24
92°
60°
25
99°
66°
26
96°
73°
27
98°
69°
28
100°
74°
29
98°
68°
30
90°
64°
1
90°
51°
2
79°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Castolon
Castolon's April 2026 forecast shows daily high temperatures ranging from 79° to 100°, with overnight lows between 49° and 74°. The average high for April is 94° 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 Castolon. See also: May | June | July.