S
M
T
W
T
F
S
26
68°
50°
27
68°
46°
28
57°
41°
29
54°
41°
30
50°
37°
1
52°
36°
2
63°
34°
3
72°
52°
4
70°
43°
5
52°
36°
6
46°
30°
7
59°
34°
8
72°
41°
9
63°
43°
10
63°
37°
11
66°
36°
12
77°
52°
13
68°
46°
14
75°
41°
15
86°
54°
16
81°
57°
17
64°
55°
18
73°
59°
19
51°
40°
20
60°
46°
21
62°
47°
22
58°
46°
23
62°
52°
24
74°
54°
25
79°
59°
26
77°
59°
27
76°
58°
28
76°
57°
29
75°
58°
30
75°
59°
31
76°
60°
1
72°
51°
2
70°
55°
3
68°
53°
4
68°
53°
5
73°
57°
6
71°
57°
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 51° to 79°, with overnight lows between 40° and 60°. The average high for May is 70° with an average low of 54°. 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.