S
M
T
W
T
F
S
27
72°
56°
28
76°
58°
29
78°
58°
30
77°
53°
1
78°
46°
2
68°
54°
3
66°
52°
4
69°
49°
5
68°
48°
6
67°
41°
7
62°
46°
8
63°
45°
9
65°
41°
10
61°
40°
11
61°
38°
12
60°
44°
13
60°
40°
14
59°
48°
15
66°
51°
16
68°
47°
17
66°
41°
18
63°
39°
19
56°
38°
20
55°
39°
21
61°
47°
22
62°
49°
23
65°
42°
24
63°
35°
25
55°
37°
26
54°
39°
27
53°
34°
28
53°
34°
29
50°
30°
30
50°
32°
31
51°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Oak Forest
Oak Forest's October 2026 forecast shows daily high temperatures ranging from 50° to 78°, with overnight lows between 30° and 58°. The average high for October is 63° 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 Oak Forest. See also: November | December | January.