S
M
T
W
T
F
S
26
65°
42°
27
58°
48°
28
61°
45°
29
52°
37°
30
50°
33°
1
47°
28°
2
61°
26°
3
72°
45°
4
73°
42°
5
52°
34°
6
52°
32°
7
57°
36°
8
63°
40°
9
65°
36°
10
58°
34°
11
57°
38°
12
60°
43°
13
64°
46°
14
67°
43°
15
67°
44°
16
66°
43°
17
65°
42°
18
78°
57°
19
69°
51°
20
67°
49°
21
65°
42°
22
61°
41°
23
62°
44°
24
62°
43°
25
63°
43°
26
63°
44°
27
62°
45°
28
63°
45°
29
65°
54°
30
65°
53°
31
66°
51°
1
71°
54°
2
74°
56°
3
75°
57°
4
76°
58°
5
76°
58°
6
75°
59°
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 52° to 78°, with overnight lows between 32° and 59°. The average high for May is 65° with an average low of 46°. 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.
