S
M
T
W
T
F
S
28
98°
81°
29
97°
80°
30
99°
80°
1
98°
79°
2
100°
78°
3
97°
78°
4
99°
80°
5
98°
79°
6
99°
80°
7
96°
78°
8
99°
80°
9
94°
78°
10
96°
79°
11
98°
78°
12
98°
76°
13
99°
78°
14
99°
78°
15
98°
78°
16
93°
78°
17
93°
77°
18
95°
78°
19
96°
79°
20
97°
79°
21
99°
77°
22
99°
78°
23
96°
79°
24
97°
79°
25
98°
78°
26
99°
77°
27
97°
77°
28
97°
78°
29
99°
79°
30
100°
79°
31
100°
78°
1
99°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in McAllen
McAllen's July 2026 forecast shows daily high temperatures ranging from 93° to 100°, with overnight lows between 76° and 81°. The average high for July is 98° with an average low of 79°. 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 McAllen. See also: August | September | October.