S
M
T
W
T
F
S
27
91°
65°
28
88°
64°
29
78°
67°
30
88°
65°
1
88°
64°
2
79°
64°
3
78°
62°
4
77°
60°
5
76°
56°
6
77°
53°
7
78°
58°
8
80°
52°
9
74°
54°
10
75°
57°
11
78°
52°
12
74°
58°
13
77°
60°
14
83°
59°
15
74°
62°
16
85°
61°
17
83°
54°
18
83°
53°
19
76°
53°
20
79°
57°
21
79°
58°
22
71°
57°
23
81°
47°
24
77°
51°
25
70°
57°
26
76°
48°
27
74°
43°
28
67°
42°
29
66°
42°
30
66°
44°
31
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Allen
Allen's October 2026 forecast shows daily high temperatures ranging from 66° to 91°, with overnight lows between 42° and 67°. The average high for October is 78° with an average low of 56°. 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 Allen. See also: November | December | January.