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
69°
57°
5
67°
54°
6
75°
50°
7
76°
52°
8
81°
59°
9
80°
59°
10
78°
57°
11
85°
54°
12
67°
61°
13
72°
56°
14
70°
56°
15
69°
56°
16
71°
57°
17
67°
55°
18
74°
57°
19
75°
56°
20
74°
58°
21
73°
57°
22
75°
58°
23
74°
57°
24
75°
58°
25
75°
57°
26
74°
56°
27
69°
52°
28
70°
53°
29
70°
53°
30
71°
54°
31
75°
58°
1
77°
59°
2
78°
60°
3
78°
60°
4
77°
55°
5
71°
55°
6
72°
56°
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 67° to 78°, with overnight lows between 52° 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.