S
M
T
W
T
F
S
27
65°
57°
28
67°
59°
29
71°
60°
30
74°
57°
1
80°
59°
2
84°
58°
3
72°
50°
4
61°
51°
5
70°
49°
6
62°
41°
7
69°
36°
8
75°
46°
9
72°
41°
10
71°
40°
11
58°
54°
12
73°
54°
13
78°
48°
14
79°
59°
15
68°
48°
16
75°
56°
17
56°
34°
18
60°
31°
19
69°
32°
20
70°
37°
21
66°
34°
22
68°
37°
23
61°
34°
24
63°
29°
25
63°
35°
26
69°
43°
27
61°
35°
28
58°
41°
29
65°
41°
30
71°
41°
31
63°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lehigh Valley
Lehigh Valley's October 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 29° and 43°. The average high for October is 64° with an average low of 38°. 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 Lehigh Valley. See also: November | December | January.