S
M
T
W
T
F
S
30
78°
52°
31
79°
44°
1
71°
53°
2
83°
51°
3
83°
56°
4
86°
51°
5
86°
57°
6
85°
59°
7
80°
57°
8
75°
46°
9
71°
44°
10
80°
43°
11
80°
49°
12
62°
44°
13
64°
41°
14
71°
46°
15
62°
39°
16
75°
49°
17
61°
48°
18
77°
54°
19
67°
50°
20
58°
47°
21
53°
45°
22
55°
48°
23
68°
49°
24
69°
45°
25
66°
41°
26
74°
49°
27
63°
46°
28
65°
49°
29
69°
47°
30
72°
42°
1
54°
36°
2
71°
35°
3
68°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Custer
Custer's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Custer. See also: October | November | December.
