S
M
T
W
T
F
S
29
35°
18°
30
31°
9°
31
36°
-3°
1
37°
12°
2
36°
29°
3
44°
23°
4
48°
33°
5
44°
31°
6
57°
30°
7
46°
28°
8
47°
21°
9
49°
21°
10
60°
30°
11
57°
33°
12
44°
34°
13
56°
36°
14
50°
35°
15
46°
18°
16
40°
18°
17
46°
28°
18
48°
29°
19
46°
24°
20
49°
26°
21
48°
26°
22
51°
30°
23
42°
23°
24
41°
21°
25
42°
22°
26
43°
24°
27
44°
25°
28
44°
26°
29
45°
25°
30
46°
26°
1
47°
26°
2
47°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Castle Mountain
Castle Mountain's April 2026 forecast shows daily high temperatures ranging from 40° to 60°, with overnight lows between 18° and 36°. The average high for April is 47° with an average low of 26°. 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 Mountain. See also: May | June | July.
