S
M
T
W
T
F
S
27
73°
51°
28
73°
51°
29
72°
50°
30
71°
49°
1
70°
49°
2
70°
48°
3
69°
48°
4
69°
47°
5
67°
45°
6
60°
44°
7
64°
44°
8
66°
45°
9
66°
44°
10
61°
41°
11
57°
43°
12
66°
44°
13
66°
40°
14
65°
27°
15
58°
25°
16
49°
29°
17
46°
28°
18
47°
28°
19
47°
29°
20
48°
28°
21
49°
26°
22
48°
28°
23
46°
27°
24
45°
26°
25
44°
22°
26
44°
24°
27
45°
30°
28
45°
27°
29
46°
31°
30
46°
31°
31
47°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Custer
Custer's October 2026 forecast shows daily high temperatures ranging from 44° to 73°, with overnight lows between 21° and 51°. The average high for October is 57° with an average low of 36°. 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. See also: November | December | January.