S
M
T
W
T
F
S
27
76°
57°
28
77°
57°
29
78°
58°
30
78°
58°
1
77°
57°
2
76°
56°
3
74°
56°
4
75°
55°
5
74°
56°
6
74°
56°
7
72°
52°
8
64°
51°
9
73°
45°
10
73°
41°
11
64°
51°
12
61°
49°
13
67°
48°
14
59°
47°
15
61°
45°
16
64°
48°
17
66°
49°
18
67°
49°
19
68°
50°
20
71°
49°
21
68°
50°
22
68°
47°
23
67°
46°
24
68°
49°
25
67°
45°
26
68°
41°
27
64°
37°
28
56°
35°
29
51°
32°
30
49°
32°
31
48°
35°
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 78°, with overnight lows between 32° and 58°. The average high for October is 68° with an average low of 48°. 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.
