S
M
T
W
T
F
S
26
33°
16°
27
35°
22°
28
41°
25°
29
44°
27°
30
59°
22°
1
55°
29°
2
61°
36°
3
61°
38°
4
44°
31°
5
44°
27°
6
51°
21°
7
60°
25°
8
56°
29°
9
55°
26°
10
66°
29°
11
66°
42°
12
72°
42°
13
79°
48°
14
62°
35°
15
40°
31°
16
44°
31°
17
49°
32°
18
55°
35°
19
63°
39°
20
64°
40°
21
63°
40°
22
63°
39°
23
62°
41°
24
64°
41°
25
65°
40°
26
59°
41°
27
61°
44°
28
60°
40°
29
58°
37°
30
61°
40°
31
68°
47°
1
61°
47°
2
63°
46°
3
67°
47°
4
62°
44°
5
63°
47°
6
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Valley
South Valley's May 2026 forecast shows daily high temperatures ranging from 40° to 79°, with overnight lows between 31° and 49°. The average high for May is 61° with an average low of 41°. 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 South Valley. See also: June | July | August.
