S
M
T
W
T
F
S
26
62°
42°
27
73°
39°
28
62°
40°
29
67°
48°
30
65°
48°
1
66°
40°
2
62°
47°
3
62°
42°
4
74°
44°
5
83°
53°
6
68°
54°
7
66°
47°
8
66°
40°
9
64°
48°
10
76°
49°
11
62°
47°
12
67°
38°
13
73°
52°
14
65°
46°
15
67°
48°
16
80°
60°
17
85°
63°
18
92°
65°
19
93°
66°
20
85°
56°
21
73°
49°
22
69°
52°
23
74°
52°
24
75°
56°
25
79°
59°
26
80°
62°
27
82°
58°
28
71°
52°
29
70°
54°
30
71°
59°
31
78°
56°
1
71°
53°
2
72°
53°
3
71°
52°
4
72°
52°
5
73°
60°
6
80°
61°
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 65° to 93°, with overnight lows between 46° and 66°. The average high for May is 76° with an average low of 56°. 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.