S
M
T
W
T
F
S
26
80°
62°
27
82°
52°
28
90°
54°
29
89°
56°
30
93°
58°
1
89°
64°
2
94°
58°
3
96°
74°
4
81°
67°
5
80°
62°
6
84°
55°
7
96°
56°
8
99°
59°
9
104°
67°
10
106°
67°
11
110°
69°
12
109°
75°
13
102°
74°
14
102°
66°
15
97°
65°
16
98°
64°
17
94°
65°
18
87°
60°
19
91°
62°
20
94°
66°
21
96°
57°
22
97°
62°
23
98°
66°
24
100°
69°
25
97°
75°
26
96°
68°
27
95°
62°
28
90°
63°
29
88°
64°
30
93°
62°
31
99°
62°
1
103°
65°
2
104°
74°
3
107°
65°
4
107°
70°
5
106°
74°
6
106°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Tan Valley
San Tan Valley's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 San Tan Valley. See also: June | July | August.
