S
M
T
W
T
F
S
28
87°
68°
29
88°
73°
30
91°
73°
1
98°
72°
2
100°
75°
3
100°
75°
4
100°
77°
5
96°
72°
6
93°
70°
7
91°
72°
8
94°
72°
9
93°
71°
10
91°
71°
11
88°
71°
12
85°
68°
13
75°
66°
14
87°
66°
15
92°
69°
16
96°
71°
17
93°
68°
18
92°
69°
19
90°
68°
20
89°
67°
21
88°
66°
22
87°
65°
23
84°
67°
24
85°
67°
25
87°
66°
26
85°
63°
27
89°
69°
28
90°
69°
29
90°
68°
30
88°
68°
31
87°
69°
1
89°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Lewisville
Lewisville's July 2026 forecast shows daily high temperatures ranging from 75° to 96°, with overnight lows between 63° and 71°. The average high for July is 88° with an average low of 68°. 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 Lewisville. See also: August | September | October.
