S
M
T
W
T
F
S
26
82°
57°
27
86°
63°
28
64°
54°
29
66°
48°
30
68°
43°
1
68°
45°
2
66°
43°
3
82°
39°
4
81°
63°
5
63°
48°
6
64°
46°
7
70°
41°
8
79°
50°
9
82°
50°
10
68°
54°
11
79°
43°
12
81°
46°
13
81°
52°
14
82°
50°
15
86°
68°
16
88°
72°
17
86°
68°
18
88°
75°
19
77°
59°
20
66°
57°
21
72°
59°
22
77°
63°
23
75°
59°
24
81°
55°
25
86°
57°
26
82°
59°
27
86°
63°
28
80°
65°
29
83°
67°
30
83°
69°
31
89°
67°
1
87°
65°
2
84°
62°
3
83°
64°
4
83°
64°
5
82°
66°
6
82°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Spring Valley
Spring Valley's May 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 62° and 69°. The average high for May is 84° with an average low of 66°. 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 Spring Valley. See also: June | July | August.