S
M
T
W
T
F
S
27
75°
52°
28
75°
52°
29
74°
51°
30
73°
50°
1
73°
50°
2
72°
49°
3
71°
49°
4
71°
48°
5
69°
46°
6
64°
46°
7
67°
45°
8
69°
46°
9
69°
45°
10
65°
43°
11
60°
44°
12
69°
46°
13
69°
43°
14
67°
29°
15
62°
27°
16
54°
31°
17
49°
30°
18
50°
30°
19
51°
31°
20
52°
29°
21
53°
27°
22
51°
29°
23
48°
28°
24
47°
27°
25
47°
23°
26
46°
25°
27
45°
30°
28
46°
29°
29
47°
32°
30
48°
31°
31
49°
22°
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 45° to 75°, with overnight lows between 22° and 52°. The average high for October is 60° with an average low of 38°. 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.