S
M
T
W
T
F
S
26
55°
35°
27
67°
37°
28
63°
48°
29
63°
46°
30
60°
41°
1
63°
48°
2
61°
44°
3
59°
45°
4
81°
55°
5
84°
60°
6
71°
48°
7
64°
43°
8
65°
53°
9
68°
46°
10
74°
50°
11
59°
42°
12
65°
47°
13
75°
53°
14
65°
48°
15
65°
47°
16
80°
61°
17
86°
62°
18
92°
71°
19
97°
73°
20
94°
59°
21
65°
54°
22
62°
52°
23
57°
52°
24
66°
55°
25
72°
57°
26
79°
59°
27
78°
58°
28
78°
58°
29
76°
58°
30
79°
60°
31
81°
63°
1
84°
55°
2
71°
56°
3
71°
59°
4
72°
60°
5
76°
58°
6
77°
60°
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 97°, with overnight lows between 52° and 73°. The average high for May is 76° with an average low of 58°. 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.