S
M
T
W
T
F
S
27
70°
43°
28
72°
45°
29
79°
46°
30
65°
60°
1
77°
61°
2
66°
46°
3
69°
43°
4
74°
46°
5
67°
42°
6
74°
47°
7
79°
50°
8
75°
49°
9
70°
56°
10
83°
60°
11
70°
54°
12
81°
58°
13
64°
47°
14
58°
49°
15
64°
48°
16
63°
43°
17
58°
40°
18
58°
42°
19
60°
44°
20
62°
43°
21
61°
40°
22
59°
42°
23
53°
39°
24
59°
44°
25
63°
45°
26
62°
39°
27
62°
37°
28
51°
33°
29
51°
41°
30
54°
40°
31
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Park Forest
Park Forest's October 2026 forecast shows daily high temperatures ranging from 51° to 83°, with overnight lows between 33° and 60°. The average high for October is 63° with an average low of 45°. 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 Park Forest. See also: November | December | January.