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°
40°
3
61°
32°
4
44°
27°
5
47°
24°
6
51°
30°
7
57°
34°
8
58°
32°
9
55°
34°
10
56°
33°
11
63°
38°
12
62°
36°
13
57°
35°
14
55°
34°
15
62°
37°
16
57°
37°
17
67°
43°
18
68°
43°
19
56°
39°
20
56°
36°
21
59°
38°
22
65°
44°
23
65°
44°
24
59°
41°
25
63°
43°
26
64°
39°
27
65°
43°
28
64°
44°
29
61°
42°
30
67°
46°
31
71°
47°
1
72°
48°
2
71°
49°
3
71°
48°
4
70°
48°
5
66°
46°
6
62°
48°
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 44° to 72°, with overnight lows between 24° and 49°. The average high for May is 61° with an average low of 40°. 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.
