S
M
T
W
T
F
S
26
81°
59°
27
79°
57°
28
63°
57°
29
81°
63°
30
72°
57°
1
64°
54°
2
70°
45°
3
70°
37°
4
79°
39°
5
79°
43°
6
81°
61°
7
75°
61°
8
70°
54°
9
70°
55°
10
81°
59°
11
81°
57°
12
70°
61°
13
79°
55°
14
77°
50°
15
79°
43°
16
84°
50°
17
90°
61°
18
88°
61°
19
88°
61°
20
86°
63°
21
86°
69°
22
84°
69°
23
80°
69°
24
86°
67°
25
85°
70°
26
81°
65°
27
79°
64°
28
83°
63°
29
81°
62°
30
79°
62°
31
81°
63°
1
83°
64°
2
81°
63°
3
83°
62°
4
84°
64°
5
86°
66°
6
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Valley
Valley's May 2026 forecast shows daily high temperatures ranging from 79° to 86°, with overnight lows between 62° and 70°. The average high for May is 83° with an average low of 65°. 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 Valley. See also: June | July | August.