S
M
T
W
T
F
S
26
70°
45°
27
62°
46°
28
54°
41°
29
62°
37°
30
58°
43°
1
59°
40°
2
68°
33°
3
76°
53°
4
80°
48°
5
60°
46°
6
62°
37°
7
73°
43°
8
79°
51°
9
77°
48°
10
74°
43°
11
84°
47°
12
81°
57°
13
80°
46°
14
83°
59°
15
92°
59°
16
85°
57°
17
84°
60°
18
62°
43°
19
64°
42°
20
63°
51°
21
61°
52°
22
70°
52°
23
76°
60°
24
81°
63°
25
80°
64°
26
79°
65°
27
82°
65°
28
82°
63°
29
79°
61°
30
81°
63°
31
79°
59°
1
82°
64°
2
78°
63°
3
74°
59°
4
75°
62°
5
80°
65°
6
81°
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 61° to 82°, with overnight lows between 42° and 66°. The average high for May is 75° 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 Valley. See also: June | July | August.
