S
M
T
W
T
F
S
28
97°
78°
29
96°
79°
30
95°
78°
1
97°
79°
2
96°
75°
3
95°
76°
4
99°
75°
5
94°
74°
6
98°
74°
7
89°
72°
8
97°
73°
9
99°
79°
10
98°
79°
11
98°
78°
12
98°
74°
13
93°
75°
14
92°
73°
15
86°
71°
16
91°
72°
17
94°
74°
18
96°
72°
19
97°
72°
20
99°
75°
21
98°
76°
22
99°
73°
23
93°
71°
24
98°
72°
25
97°
73°
26
96°
76°
27
94°
71°
28
97°
75°
29
96°
74°
30
97°
75°
31
97°
75°
1
96°
74°
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 86° to 99°, with overnight lows between 71° and 76°. The average high for July is 95° with an average low of 73°. 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.
