S
M
T
W
T
F
S
26
45°
30°
27
52°
30°
28
46°
30°
29
50°
29°
30
49°
26°
1
52°
30°
2
62°
27°
3
62°
31°
4
57°
35°
5
59°
35°
6
44°
28°
7
57°
22°
8
68°
34°
9
67°
35°
10
68°
31°
11
75°
35°
12
78°
41°
13
81°
41°
14
73°
43°
15
74°
35°
16
73°
42°
17
63°
37°
18
53°
33°
19
46°
32°
20
50°
27°
21
52°
27°
22
52°
27°
23
54°
31°
24
56°
35°
25
58°
36°
26
57°
37°
27
54°
36°
28
55°
36°
29
62°
37°
30
60°
37°
31
61°
38°
1
59°
31°
2
58°
30°
3
53°
28°
4
58°
32°
5
59°
34°
6
62°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mount Crested Butte
Mount Crested Butte's May 2026 forecast shows daily high temperatures ranging from 46° to 62°, with overnight lows between 27° and 38°. The average high for May is 56° with an average low of 33°. 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 Mount Crested Butte. See also: June | July | August.