S
M
T
W
T
F
S
26
75°
55°
27
79°
46°
28
83°
50°
29
79°
55°
30
76°
51°
1
76°
50°
2
77°
52°
3
81°
60°
4
79°
61°
5
72°
53°
6
75°
46°
7
81°
53°
8
86°
59°
9
91°
65°
10
92°
65°
11
94°
65°
12
92°
67°
13
93°
68°
14
89°
64°
15
88°
56°
16
86°
59°
17
83°
63°
18
81°
61°
19
85°
56°
20
86°
58°
21
84°
57°
22
86°
59°
23
86°
69°
24
89°
62°
25
85°
62°
26
85°
60°
27
86°
57°
28
82°
60°
29
85°
62°
30
81°
55°
31
87°
60°
1
88°
59°
2
89°
60°
3
86°
61°
4
84°
57°
5
83°
59°
6
84°
59°
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 81° to 89°, with overnight lows between 55° and 61°. The average high for May is 85° with an average low of 59°. 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.
