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
93°
76°
8
96°
75°
9
97°
77°
10
91°
78°
11
91°
77°
12
92°
76°
13
93°
76°
14
94°
77°
15
97°
76°
16
99°
78°
17
97°
78°
18
99°
77°
19
100°
77°
20
101°
75°
21
98°
76°
22
98°
78°
23
97°
79°
24
99°
78°
25
98°
78°
26
99°
77°
27
98°
78°
28
98°
77°
29
96°
77°
30
94°
75°
31
95°
76°
1
94°
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 91° to 101°, with overnight lows between 75° and 79°. The average high for July is 96° 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.