S
M
T
W
T
F
S
27
N/A
28
N/A
29
N/A
30
67°
63°
1
71°
59°
2
67°
48°
3
66°
49°
4
67°
46°
5
62°
42°
6
64°
47°
7
66°
52°
8
71°
49°
9
68°
47°
10
65°
46°
11
65°
48°
12
66°
46°
13
64°
42°
14
57°
39°
15
58°
44°
16
66°
48°
17
67°
47°
18
67°
47°
19
60°
41°
20
54°
39°
21
54°
36°
22
55°
39°
23
63°
46°
24
65°
46°
25
63°
44°
26
54°
41°
27
52°
38°
28
58°
43°
29
57°
40°
30
57°
44°
31
61°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in New Lenox
New Lenox's October 2026 forecast shows daily high temperatures ranging from 52° to 71°, with overnight lows between 36° and 63°. The average high for October is 62° with an average low of 45°. 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 New Lenox. See also: November | December | January.