S
M
T
W
T
F
S
26
67°
55°
27
68°
52°
28
73°
46°
29
76°
48°
30
72°
56°
1
78°
54°
2
78°
58°
3
69°
58°
4
67°
51°
5
64°
51°
6
70°
53°
7
73°
55°
8
76°
57°
9
79°
56°
10
75°
58°
11
78°
56°
12
76°
55°
13
75°
57°
14
76°
58°
15
73°
56°
16
74°
57°
17
73°
55°
18
76°
59°
19
77°
59°
20
77°
58°
21
76°
59°
22
77°
59°
23
78°
60°
24
78°
60°
25
77°
59°
26
77°
59°
27
75°
58°
28
71°
57°
29
70°
56°
30
70°
57°
31
71°
58°
1
72°
60°
2
74°
59°
3
73°
59°
4
73°
58°
5
74°
58°
6
72°
55°
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 64° to 79°, with overnight lows between 51° and 60°. The average high for May is 74° with an average low of 57°. 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.