S
M
T
W
T
F
S
26
67°
35°
27
58°
49°
28
57°
49°
29
64°
43°
30
71°
42°
1
70°
45°
2
73°
50°
3
76°
45°
4
76°
47°
5
62°
53°
6
58°
52°
7
63°
52°
8
58°
47°
9
67°
47°
10
64°
51°
11
68°
49°
12
77°
44°
13
60°
53°
14
59°
49°
15
53°
45°
16
57°
43°
17
63°
43°
18
63°
49°
19
63°
53°
20
65°
49°
21
71°
45°
22
73°
50°
23
62°
51°
24
67°
49°
25
55°
44°
26
57°
43°
27
69°
49°
28
73°
49°
29
60°
42°
30
60°
39°
31
59°
40°
1
65°
44°
2
70°
48°
3
71°
46°
4
68°
46°
5
67°
45°
6
68°
46°
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 55° to 73°, with overnight lows between 39° and 49°. The average high for May is 65° with an average low of 45°. 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.
