S
M
T
W
T
F
S
26
66°
32°
27
69°
38°
28
66°
39°
29
71°
44°
30
75°
41°
1
79°
36°
2
84°
52°
3
85°
50°
4
87°
50°
5
83°
64°
6
86°
50°
7
78°
51°
8
79°
46°
9
77°
47°
10
79°
46°
11
76°
46°
12
85°
45°
13
69°
52°
14
66°
43°
15
62°
44°
16
65°
41°
17
69°
44°
18
71°
43°
19
74°
47°
20
76°
49°
21
77°
51°
22
82°
46°
23
86°
51°
24
84°
50°
25
78°
51°
26
70°
52°
27
86°
54°
28
92°
60°
29
82°
49°
30
76°
43°
31
74°
42°
1
82°
47°
2
84°
58°
3
83°
51°
4
85°
55°
5
81°
53°
6
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Zillah
Zillah's May 2026 forecast shows daily high temperatures ranging from 70° to 92°, with overnight lows between 42° and 60°. The average high for May is 81° with an average low of 52°. 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 Zillah. See also: June | July | August.