S
M
T
W
T
F
S
26
67°
55°
27
68°
52°
28
70°
48°
29
70°
52°
30
66°
54°
1
73°
55°
2
74°
57°
3
72°
54°
4
70°
53°
5
69°
54°
6
72°
53°
7
71°
55°
8
74°
55°
9
73°
54°
10
73°
55°
11
74°
56°
12
75°
57°
13
75°
57°
14
76°
58°
15
76°
58°
16
75°
57°
17
74°
56°
18
72°
53°
19
71°
53°
20
71°
54°
21
72°
54°
22
71°
55°
23
74°
58°
24
77°
59°
25
77°
59°
26
76°
60°
27
78°
60°
28
78°
59°
29
77°
60°
30
77°
59°
31
74°
58°
1
74°
56°
2
73°
56°
3
73°
54°
4
71°
53°
5
71°
54°
6
72°
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 66° to 78°, with overnight lows between 48° and 60°. The average high for May is 73° 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.
