S
M
T
W
T
F
S
26
88°
62°
27
86°
59°
28
73°
53°
29
69°
44°
30
67°
47°
1
67°
47°
2
78°
46°
3
83°
47°
4
92°
56°
5
73°
48°
6
63°
46°
7
78°
41°
8
88°
53°
9
89°
51°
10
63°
50°
11
78°
46°
12
90°
53°
13
89°
59°
14
95°
65°
15
101°
64°
16
91°
72°
17
91°
68°
18
95°
73°
19
71°
53°
20
71°
59°
21
70°
60°
22
79°
57°
23
77°
61°
24
79°
58°
25
83°
58°
26
84°
60°
27
80°
59°
28
79°
62°
29
83°
62°
30
85°
63°
31
84°
61°
1
85°
59°
2
80°
62°
3
77°
56°
4
78°
58°
5
79°
64°
6
84°
65°
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 70° to 85°, with overnight lows between 53° and 65°. The average high for May is 79° with an average low of 60°. 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.