S
M
T
W
T
F
S
27
70°
47°
28
72°
49°
29
78°
51°
30
70°
60°
1
70°
61°
2
66°
49°
3
69°
45°
4
72°
52°
5
66°
45°
6
74°
47°
7
78°
57°
8
71°
48°
9
69°
51°
10
80°
56°
11
78°
51°
12
88°
58°
13
80°
65°
14
65°
59°
15
65°
57°
16
57°
42°
17
57°
37°
18
63°
43°
19
67°
38°
20
-100°
41°
21
72°
44°
22
71°
47°
23
70°
49°
24
70°
53°
25
69°
50°
26
61°
43°
27
56°
39°
28
54°
38°
29
56°
39°
30
54°
40°
31
52°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mundelein
Mundelein's October 2026 forecast shows daily high temperatures ranging from 52° to 72°, with overnight lows between 38° and 53°. The average high for October is 62° with an average low of 44°. 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 Mundelein. See also: November | December | January.
