S
M
T
W
T
F
S
26
52°
43°
27
68°
36°
28
63°
46°
29
59°
50°
30
63°
41°
1
64°
36°
2
54°
41°
3
61°
34°
4
75°
43°
5
84°
60°
6
73°
50°
7
57°
42°
8
65°
46°
9
69°
50°
10
77°
58°
11
64°
46°
12
60°
44°
13
67°
51°
14
72°
54°
15
73°
57°
16
75°
57°
17
73°
56°
18
68°
53°
19
76°
57°
20
77°
58°
21
77°
58°
22
74°
50°
23
68°
50°
24
68°
50°
25
69°
52°
26
70°
52°
27
70°
51°
28
71°
52°
29
72°
52°
30
71°
56°
31
76°
61°
1
78°
60°
2
73°
57°
3
74°
57°
4
79°
61°
5
79°
61°
6
81°
62°
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 57° to 84°, with overnight lows between 42° and 62°. The average high for May is 72° 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.