S
M
T
W
T
F
S
26
46°
41°
27
59°
41°
28
63°
45°
29
68°
46°
30
73°
54°
1
73°
59°
2
70°
59°
3
63°
48°
4
48°
45°
5
52°
45°
6
66°
50°
7
75°
55°
8
75°
57°
9
81°
59°
10
81°
63°
11
86°
68°
12
82°
55°
13
72°
52°
14
77°
55°
15
77°
57°
16
70°
52°
17
64°
50°
18
75°
52°
19
71°
55°
20
74°
60°
21
77°
62°
22
77°
59°
23
77°
58°
24
77°
57°
25
72°
54°
26
75°
61°
27
77°
58°
28
75°
54°
29
72°
53°
30
73°
55°
31
74°
58°
1
75°
50°
2
79°
55°
3
80°
56°
4
81°
56°
5
81°
55°
6
80°
56°
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 71° to 81°, with overnight lows between 50° and 62°. The average high for May is 76° with an average low of 56°. 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.