S
M
T
W
T
F
S
27
74°
56°
28
76°
55°
29
76°
52°
30
70°
49°
1
69°
52°
2
70°
54°
3
74°
50°
4
74°
54°
5
73°
53°
6
66°
54°
7
73°
54°
8
73°
51°
9
67°
47°
10
62°
48°
11
68°
45°
12
63°
45°
13
67°
50°
14
70°
51°
15
71°
50°
16
70°
49°
17
70°
47°
18
60°
44°
19
59°
48°
20
62°
49°
21
68°
47°
22
67°
39°
23
54°
37°
24
54°
40°
25
60°
45°
26
67°
41°
27
59°
35°
28
58°
34°
29
60°
38°
30
63°
44°
31
65°
43°
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 76°, with overnight lows between 34° and 56°. The average high for October is 67° with an average low of 47°. 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.
