S
M
T
W
T
F
S
29
75°
30°
30
71°
32°
31
60°
41°
1
52°
36°
2
49°
23°
3
52°
14°
4
62°
18°
5
68°
21°
6
69°
26°
7
71°
28°
8
78°
41°
9
71°
42°
10
67°
43°
11
59°
41°
12
51°
25°
13
47°
26°
14
56°
28°
15
68°
34°
16
71°
36°
17
62°
38°
18
64°
35°
19
63°
34°
20
60°
35°
21
64°
33°
22
57°
37°
23
58°
33°
24
57°
34°
25
58°
37°
26
58°
38°
27
59°
32°
28
57°
33°
29
57°
31°
30
59°
36°
1
59°
37°
2
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Sunnyside
Sunnyside's April 2026 forecast shows daily high temperatures ranging from 47° to 78°, with overnight lows between 25° and 43°. The average high for April is 61° with an average low of 35°. 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 Sunnyside. See also: May | June | July.