S
M
T
W
T
F
S
27
62°
57°
28
66°
56°
29
71°
58°
30
75°
60°
1
81°
61°
2
79°
55°
3
68°
46°
4
60°
46°
5
66°
48°
6
62°
39°
7
70°
37°
8
70°
43°
9
70°
43°
10
68°
53°
11
58°
56°
12
70°
58°
13
71°
50°
14
62°
43°
15
59°
48°
16
68°
51°
17
60°
44°
18
56°
39°
19
60°
41°
20
61°
42°
21
62°
37°
22
53°
39°
23
52°
36°
24
51°
35°
25
54°
38°
26
60°
43°
27
59°
34°
28
49°
33°
29
48°
32°
30
49°
33°
31
56°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lemont
Lemont's October 2026 forecast shows daily high temperatures ranging from 48° to 71°, with overnight lows between 32° and 58°. The average high for October is 59° 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 Lemont. See also: November | December | January.
