S
M
T
W
T
F
S
28
93°
81°
29
94°
79°
30
94°
78°
1
95°
78°
2
97°
78°
3
96°
79°
4
97°
78°
5
97°
79°
6
97°
79°
7
97°
79°
8
94°
79°
9
92°
75°
10
91°
79°
11
96°
80°
12
98°
79°
13
96°
77°
14
95°
79°
15
92°
78°
16
94°
77°
17
98°
79°
18
98°
78°
19
99°
78°
20
97°
79°
21
97°
78°
22
98°
77°
23
97°
78°
24
97°
79°
25
98°
78°
26
98°
78°
27
97°
79°
28
98°
79°
29
98°
78°
30
97°
79°
31
99°
79°
1
98°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Weslaco
Weslaco's July 2026 forecast shows daily high temperatures ranging from 91° to 99°, with overnight lows between 75° and 80°. The average high for July is 97° with an average low of 78°. 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 Weslaco. See also: August | September | October.