S
M
T
W
T
F
S
28
104°
71°
29
103°
76°
30
102°
70°
1
77°
51°
2
104°
67°
3
107°
64°
4
106°
81°
5
108°
84°
6
111°
79°
7
113°
79°
8
112°
87°
9
112°
82°
10
110°
83°
11
106°
85°
12
109°
81°
13
108°
85°
14
109°
85°
15
107°
84°
16
104°
83°
17
99°
79°
18
100°
82°
19
101°
83°
20
99°
82°
21
103°
79°
22
103°
83°
23
105°
82°
24
104°
79°
25
98°
76°
26
98°
77°
27
107°
82°
28
106°
82°
29
102°
76°
30
98°
76°
31
98°
77°
1
99°
76°
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 98° to 109°, with overnight lows between 76° and 85°. The average high for July is 103° 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.