S
M
T
W
T
F
S
26
38°
27°
27
38°
28°
28
56°
27°
29
58°
36°
30
61°
34°
1
72°
39°
2
71°
46°
3
77°
45°
4
57°
39°
5
51°
35°
6
69°
28°
7
65°
50°
8
77°
46°
9
65°
51°
10
80°
43°
11
82°
53°
12
75°
45°
13
95°
48°
14
75°
52°
15
71°
45°
16
71°
40°
17
55°
35°
18
50°
34°
19
68°
39°
20
69°
45°
21
58°
39°
22
71°
43°
23
80°
49°
24
84°
54°
25
91°
53°
26
73°
44°
27
80°
48°
28
85°
53°
29
82°
50°
30
79°
49°
31
83°
49°
1
75°
47°
2
71°
49°
3
74°
51°
4
80°
52°
5
76°
53°
6
71°
50°
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 58° to 91°, with overnight lows between 39° and 54°. The average high for May is 76° with an average low of 48°. 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.
