S
M
T
W
T
F
S
27
96°
76°
28
93°
78°
29
95°
77°
30
91°
79°
1
81°
72°
2
76°
67°
3
76°
67°
4
80°
64°
5
85°
62°
6
83°
59°
7
86°
62°
8
85°
63°
9
83°
60°
10
79°
61°
11
79°
60°
12
80°
61°
13
81°
57°
14
78°
56°
15
73°
55°
16
76°
60°
17
77°
60°
18
79°
54°
19
71°
49°
20
76°
52°
21
73°
53°
22
78°
59°
23
79°
58°
24
77°
59°
25
76°
59°
26
71°
58°
27
71°
57°
28
70°
55°
29
69°
51°
30
68°
51°
31
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lewisville
Lewisville's October 2026 forecast shows daily high temperatures ranging from 68° to 86°, with overnight lows between 49° and 72°. The average high for October is 77° 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 October weather will actually feel in Lewisville. See also: November | December | January.