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
55°
38°
3
60°
42°
4
73°
55°
5
83°
60°
6
71°
52°
7
62°
45°
8
59°
44°
9
60°
44°
10
64°
47°
11
65°
48°
12
64°
49°
13
67°
51°
14
69°
54°
15
72°
52°
16
76°
56°
17
77°
57°
18
77°
58°
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 55° to 83°, with overnight lows between 38° and 62°. The average high for May is 71° with an average low of 53°. 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.