S
M
T
W
T
F
S
26
60°
39°
27
72°
45°
28
58°
41°
29
45°
37°
30
48°
36°
1
46°
31°
2
50°
27°
3
56°
43°
4
71°
41°
5
53°
38°
6
50°
29°
7
49°
28°
8
61°
27°
9
58°
38°
10
56°
28°
11
51°
25°
12
66°
33°
13
52°
34°
14
62°
28°
15
72°
55°
16
77°
53°
17
79°
65°
18
81°
65°
19
76°
43°
20
59°
39°
21
63°
43°
22
68°
48°
23
73°
50°
24
71°
51°
25
73°
51°
26
71°
52°
27
74°
53°
28
75°
47°
29
68°
50°
30
67°
47°
31
66°
44°
1
66°
43°
2
67°
43°
3
68°
49°
4
69°
53°
5
75°
55°
6
78°
56°
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 59° to 81°, with overnight lows between 39° and 65°. The average high for May is 71° with an average low of 50°. 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.
