S
M
T
W
T
F
S
27
62°
53°
28
65°
49°
29
67°
42°
30
59°
49°
1
64°
50°
2
68°
47°
3
64°
44°
4
60°
42°
5
56°
41°
6
57°
44°
7
59°
46°
8
63°
49°
9
64°
45°
10
63°
46°
11
61°
47°
12
Hist. Avg.
60°
38°
13
Hist. Avg.
60°
38°
14
Hist. Avg.
59°
37°
15
Hist. Avg.
59°
37°
16
Hist. Avg.
58°
37°
17
Hist. Avg.
58°
36°
18
Hist. Avg.
57°
36°
19
Hist. Avg.
57°
36°
20
Hist. Avg.
56°
36°
21
Hist. Avg.
56°
35°
22
Hist. Avg.
56°
35°
23
Hist. Avg.
55°
34°
24
Hist. Avg.
55°
34°
25
Hist. Avg.
54°
34°
26
Hist. Avg.
54°
34°
27
Hist. Avg.
54°
33°
28
Hist. Avg.
53°
33°
29
Hist. Avg.
53°
33°
30
Hist. Avg.
52°
32°
31
Hist. Avg.
52°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Allentown
Allentown's October 2026 forecast shows daily high temperatures ranging from 56° to 68°, with overnight lows between 41° and 53°. The average high for October is 62° with an average low of 46°. 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.