S
M
T
W
T
F
S
26
45°
28°
27
46°
39°
28
49°
39°
29
50°
39°
30
48°
39°
1
53°
37°
2
49°
41°
3
49°
42°
4
57°
39°
5
50°
42°
6
47°
40°
7
52°
37°
8
45°
34°
9
53°
41°
10
49°
41°
11
49°
40°
12
58°
38°
13
51°
34°
14
50°
41°
15
55°
38°
16
55°
35°
17
49°
38°
18
49°
41°
19
50°
41°
20
47°
43°
21
53°
43°
22
47°
42°
23
50°
38°
24
52°
36°
25
54°
44°
26
50°
42°
27
50°
41°
28
44°
38°
29
45°
39°
30
49°
40°
31
50°
41°
1
57°
46°
2
49°
48°
3
52°
47°
4
55°
49°
5
56°
50°
6
51°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sunnyside
Sunnyside's May 2026 forecast shows daily high temperatures ranging from 44° to 57°, with overnight lows between 36° and 50°. The average high for May is 51° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Sunnyside. See also: June | July | August.
