S
M
T
W
T
F
S
26
32°
26°
27
34°
28°
28
40°
28°
29
48°
26°
30
48°
24°
1
53°
28°
2
68°
37°
3
61°
43°
4
54°
28°
5
39°
25°
6
43°
29°
7
55°
41°
8
62°
42°
9
60°
42°
10
59°
41°
11
64°
43°
12
74°
48°
13
66°
42°
14
65°
44°
15
61°
40°
16
65°
46°
17
64°
45°
18
65°
45°
19
56°
44°
20
58°
44°
21
56°
37°
22
59°
45°
23
65°
48°
24
59°
40°
25
56°
38°
26
58°
41°
27
59°
45°
28
58°
44°
29
57°
44°
30
59°
42°
31
61°
45°
1
67°
50°
2
72°
51°
3
73°
52°
4
73°
53°
5
72°
53°
6
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Custer
Custer's May 2026 forecast shows daily high temperatures ranging from 39° to 74°, with overnight lows between 25° and 53°. The average high for May is 62° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Custer. See also: June | July | August.
