S
M
T
W
T
F
S
27
66°
58°
28
67°
60°
29
72°
58°
30
78°
56°
1
83°
62°
2
88°
64°
3
71°
55°
4
62°
58°
5
73°
50°
6
64°
43°
7
70°
50°
8
78°
45°
9
73°
44°
10
70°
51°
11
68°
62°
12
72°
57°
13
71°
42°
14
64°
41°
15
59°
40°
16
61°
42°
17
68°
48°
18
65°
42°
19
67°
44°
20
64°
41°
21
58°
39°
22
58°
45°
23
58°
36°
24
57°
35°
25
57°
39°
26
63°
41°
27
66°
34°
28
55°
33°
29
54°
33°
30
55°
34°
31
60°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Allentown
Allentown's October 2026 forecast shows daily high temperatures ranging from 54° to 78°, with overnight lows between 33° and 62°. The average high for October is 64° with an average low of 42°. 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 Allentown. See also: November | December | January.
