S
M
T
W
T
F
S
29
47°
23°
30
65°
34°
31
62°
49°
1
N/A
2
41°
37°
3
71°
42°
4
59°
46°
5
52°
34°
6
45°
28°
7
41°
22°
8
45°
33°
9
61°
40°
10
64°
45°
11
62°
44°
12
62°
45°
13
63°
44°
14
60°
42°
15
57°
34°
16
56°
29°
17
50°
29°
18
51°
30°
19
53°
32°
20
63°
42°
21
66°
42°
22
65°
41°
23
56°
42°
24
67°
44°
25
69°
44°
26
65°
43°
27
57°
41°
28
58°
39°
29
57°
42°
30
61°
41°
1
59°
38°
2
60°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Castleton
Castleton's April 2026 forecast shows daily high temperatures ranging from 41° to 71°, with overnight lows between 22° and 46°. The average high for April is 58° with an average low of 38°. 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 Castleton. See also: May | June | July.
