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
75°
57°
14
74°
61°
15
75°
61°
16
71°
61°
17
70°
56°
18
73°
58°
19
85°
51°
20
85°
52°
21
79°
56°
22
76°
60°
23
76°
61°
24
74°
62°
25
71°
57°
26
65°
54°
27
65°
53°
28
66°
55°
29
70°
55°
30
75°
58°
31
75°
58°
1
80°
59°
2
78°
60°
3
76°
59°
4
78°
61°
5
76°
60°
6
75°
58°
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 80°, with overnight lows between 53° and 61°. The average high for May is 73° 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.