S
M
T
W
T
F
S
28
93°
77°
29
94°
78°
30
93°
77°
1
94°
77°
2
93°
77°
3
95°
77°
4
94°
77°
5
94°
77°
6
95°
78°
7
96°
77°
8
97°
78°
9
97°
75°
10
95°
75°
11
86°
74°
12
95°
77°
13
94°
77°
14
82°
74°
15
79°
74°
16
82°
75°
17
89°
75°
18
92°
76°
19
93°
76°
20
95°
77°
21
95°
76°
22
99°
78°
23
100°
77°
24
96°
76°
25
97°
77°
26
96°
77°
27
103°
78°
28
98°
78°
29
97°
77°
30
98°
78°
31
99°
78°
1
99°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Castle Hills
Castle Hills's July 2026 forecast shows daily high temperatures ranging from 79° to 103°, with overnight lows between 74° and 78°. The average high for July is 94° with an average low of 77°. 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 Castle Hills. See also: August | September | October.