S
M
T
W
T
F
S
27
81°
55°
28
80°
55°
29
84°
60°
30
87°
62°
1
86°
65°
2
84°
70°
3
82°
70°
4
73°
65°
5
79°
62°
6
78°
56°
7
78°
57°
8
79°
58°
9
80°
62°
10
78°
61°
11
77°
60°
12
76°
58°
13
78°
56°
14
76°
57°
15
74°
54°
16
72°
54°
17
73°
58°
18
74°
55°
19
74°
55°
20
71°
48°
21
66°
47°
22
66°
46°
23
67°
47°
24
71°
47°
25
72°
52°
26
73°
52°
27
75°
49°
28
66°
50°
29
64°
49°
30
70°
46°
31
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Forest Park
Forest Park's October 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 46° and 70°. The average high for October is 74° 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 Forest Park. See also: November | December | January.