S
M
T
W
T
F
S
26
58°
39°
27
54°
38°
28
52°
39°
29
54°
39°
30
55°
41°
1
55°
40°
2
57°
39°
3
56°
36°
4
54°
35°
5
54°
36°
6
56°
36°
7
57°
40°
8
61°
42°
9
60°
42°
10
59°
40°
11
58°
38°
12
57°
39°
13
55°
38°
14
57°
39°
15
58°
39°
16
59°
40°
17
60°
41°
18
61°
41°
19
62°
40°
20
61°
41°
21
63°
43°
22
62°
44°
23
63°
50°
24
66°
51°
25
72°
51°
26
71°
49°
27
67°
52°
28
73°
53°
29
75°
47°
30
73°
45°
31
65°
45°
1
64°
47°
2
67°
46°
3
68°
51°
4
74°
53°
5
73°
53°
6
68°
54°
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 52° to 75°, with overnight lows between 35° and 54°. The average high for May is 62° with an average low of 43°. 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.