S
M
T
W
T
F
S
29
55°
34°
30
48°
31°
31
56°
27°
1
40°
30°
2
50°
32°
3
54°
33°
4
66°
33°
5
69°
37°
6
69°
40°
7
53°
31°
8
63°
32°
9
66°
32°
10
65°
38°
11
67°
40°
12
62°
39°
13
60°
38°
14
65°
37°
15
63°
39°
16
61°
38°
17
63°
41°
18
60°
37°
19
52°
31°
20
53°
31°
21
54°
34°
22
54°
33°
23
54°
32°
24
55°
33°
25
56°
34°
26
57°
34°
27
62°
35°
28
65°
39°
29
66°
40°
30
67°
41°
1
68°
44°
2
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Castlegar
Castlegar's April 2026 forecast shows daily high temperatures ranging from 52° to 69°, with overnight lows between 31° and 44°. The average high for April is 61° with an average low of 37°. 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 Castlegar. See also: May | June | July.
