S
M
T
W
T
F
S
26
72°
31°
27
58°
41°
28
57°
48°
29
68°
43°
30
77°
39°
1
76°
43°
2
75°
49°
3
82°
46°
4
78°
46°
5
66°
51°
6
62°
52°
7
67°
48°
8
66°
46°
9
70°
40°
10
69°
43°
11
73°
50°
12
84°
45°
13
59°
51°
14
61°
48°
15
53°
44°
16
62°
42°
17
64°
35°
18
70°
42°
19
67°
48°
20
68°
46°
21
76°
42°
22
79°
44°
23
68°
49°
24
74°
43°
25
63°
46°
26
65°
47°
27
77°
51°
28
83°
53°
29
63°
46°
30
64°
45°
31
70°
46°
1
78°
50°
2
82°
53°
3
73°
51°
4
74°
49°
5
69°
51°
6
68°
49°
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 63° to 83°, with overnight lows between 45° and 53°. The average high for May is 72° with an average low of 49°. 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.
