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
38°
20°
8
44°
21°
9
52°
22°
10
61°
27°
11
59°
33°
12
46°
27°
13
43°
28°
14
50°
33°
15
46°
27°
16
46°
28°
17
55°
31°
18
56°
34°
19
54°
32°
20
50°
29°
21
44°
25°
22
42°
25°
23
43°
24°
24
44°
25°
25
44°
25°
26
45°
24°
27
47°
25°
28
49°
26°
29
52°
27°
30
56°
31°
1
57°
33°
2
57°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Castle Junction
Castle Junction's April 2026 forecast shows daily high temperatures ranging from 38° to 61°, with overnight lows between 20° and 35°. The average high for April is 49° with an average low of 28°. 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 Junction. See also: May | June | July.