S
M
T
W
T
F
S
27
63°
46°
28
65°
49°
29
69°
47°
30
72°
42°
1
54°
36°
2
71°
35°
3
68°
41°
4
71°
36°
5
81°
47°
6
79°
48°
7
74°
43°
8
76°
40°
9
78°
42°
10
77°
50°
11
62°
42°
12
59°
39°
13
52°
37°
14
46°
39°
15
48°
29°
16
50°
26°
17
70°
42°
18
62°
40°
19
58°
33°
20
70°
38°
21
64°
36°
22
68°
48°
23
73°
39°
24
51°
31°
25
37°
31°
26
34°
29°
27
49°
38°
28
55°
36°
29
57°
37°
30
54°
40°
31
56°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Custer State Park
Custer State Park's October 2026 forecast shows daily high temperatures ranging from 34° to 73°, with overnight lows between 29° and 40°. The average high for October is 52° with an average low of 35°. 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 Custer State Park. See also: November | December | January.