S
M
T
W
T
F
S
29
73°
46°
30
73°
54°
31
70°
54°
1
63°
48°
2
68°
45°
3
68°
46°
4
54°
36°
5
57°
39°
6
59°
36°
7
54°
41°
8
68°
39°
9
71°
52°
10
73°
45°
11
64°
46°
12
64°
46°
13
63°
42°
14
61°
33°
15
65°
36°
16
69°
41°
17
65°
40°
18
68°
43°
19
69°
44°
20
69°
44°
21
70°
45°
22
66°
34°
23
66°
39°
24
60°
34°
25
60°
36°
26
64°
40°
27
66°
40°
28
65°
39°
29
62°
36°
30
62°
36°
1
64°
37°
2
62°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Sun Valley
Sun Valley's April 2026 forecast shows daily high temperatures ranging from 60° to 73°, with overnight lows between 33° and 52°. The average high for April is 65° with an average low of 40°. 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 Sun Valley. See also: May | June | July.
