S
M
T
W
T
F
S
27
72°
49°
28
73°
52°
29
78°
54°
30
70°
60°
1
70°
61°
2
67°
52°
3
69°
48°
4
73°
53°
5
68°
47°
6
74°
50°
7
79°
57°
8
73°
53°
9
71°
56°
10
80°
62°
11
78°
55°
12
88°
63°
13
80°
65°
14
66°
59°
15
66°
57°
16
57°
41°
17
57°
39°
18
63°
42°
19
68°
43°
20
69°
44°
21
71°
45°
22
73°
50°
23
71°
49°
24
70°
50°
25
73°
52°
26
N/A
27
70°
54°
28
74°
57°
29
73°
53°
30
69°
56°
31
66°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Oak Brook
Oak Brook's October 2026 forecast shows daily high temperatures ranging from 66° to 74°, with overnight lows between 53° and 57°. The average high for October is 70° with an average low of 55°. 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 Oak Brook. See also: November | December | January.
