S
M
T
W
T
F
S
26
50°
38°
27
45°
34°
28
44°
34°
29
45°
35°
30
45°
35°
1
46°
36°
2
45°
35°
3
46°
35°
4
45°
36°
5
46°
35°
6
47°
36°
7
52°
38°
8
52°
40°
9
48°
39°
10
47°
38°
11
50°
37°
12
48°
37°
13
53°
38°
14
47°
37°
15
48°
37°
16
48°
38°
17
47°
38°
18
48°
40°
19
48°
40°
20
49°
39°
21
49°
40°
22
51°
42°
23
51°
40°
24
53°
40°
25
52°
42°
26
51°
40°
27
50°
41°
28
50°
40°
29
51°
40°
30
51°
46°
31
56°
46°
1
58°
41°
2
52°
41°
3
50°
42°
4
52°
45°
5
52°
47°
6
53°
47°
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 58°, with overnight lows between 34° and 47°. The average high for May is 49° with an average low of 39°. 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.
