S
M
T
W
T
F
S
26
50°
30°
27
52°
31°
28
56°
37°
29
48°
33°
30
43°
26°
1
52°
30°
2
59°
36°
3
61°
37°
4
53°
35°
5
49°
32°
6
60°
36°
7
50°
30°
8
53°
30°
9
54°
36°
10
63°
35°
11
56°
33°
12
54°
33°
13
55°
34°
14
56°
33°
15
58°
34°
16
63°
39°
17
65°
38°
18
58°
35°
19
56°
34°
20
59°
35°
21
66°
38°
22
66°
40°
23
63°
42°
24
59°
38°
25
57°
37°
26
58°
37°
27
60°
40°
28
62°
40°
29
63°
39°
30
68°
43°
31
73°
46°
1
74°
48°
2
75°
47°
3
67°
49°
4
66°
50°
5
76°
48°
6
75°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cheyenne
Cheyenne's May 2026 forecast shows daily high temperatures ranging from 43° to 76°, with overnight lows between 26° and 50°. The average high for May is 60° with an average low of 37°. 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 Cheyenne. See also: June | July | August.