S
M
T
W
T
F
S
28
104°
71°
29
103°
76°
30
102°
70°
1
77°
51°
2
105°
70°
3
107°
77°
4
107°
77°
5
107°
77°
6
112°
78°
7
109°
83°
8
108°
83°
9
105°
82°
10
104°
81°
11
105°
83°
12
105°
85°
13
107°
84°
14
108°
86°
15
105°
77°
16
100°
78°
17
103°
80°
18
102°
81°
19
106°
82°
20
106°
82°
21
105°
81°
22
106°
82°
23
106°
82°
24
105°
81°
25
100°
80°
26
105°
82°
27
103°
82°
28
105°
81°
29
106°
81°
30
106°
82°
31
106°
82°
1
105°
81°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in San Tan Valley
San Tan Valley's July 2026 forecast shows daily high temperatures ranging from 100° to 112°, with overnight lows between 70° and 86°. The average high for July is 105° with an average low of 81°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in San Tan Valley. See also: August | September | October.