S
M
T
W
T
F
S
28
64°
45°
29
59°
45°
30
76°
43°
1
82°
43°
2
83°
45°
3
87°
45°
4
90°
44°
5
95°
48°
6
92°
54°
7
91°
53°
8
91°
52°
9
89°
51°
10
92°
53°
11
100°
55°
12
98°
62°
13
94°
64°
14
93°
62°
15
92°
64°
16
90°
64°
17
92°
62°
18
91°
61°
19
89°
59°
20
87°
55°
21
89°
60°
22
89°
61°
23
90°
61°
24
90°
60°
25
89°
61°
26
90°
61°
27
90°
60°
28
89°
61°
29
90°
61°
30
90°
60°
31
89°
61°
1
91°
62°
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 87° to 100°, with overnight lows between 51° and 64°. The average high for July is 91° with an average low of 59°. 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.
