S
M
T
W
T
F
S
26
77°
42°
27
71°
57°
28
63°
50°
29
60°
38°
30
61°
35°
1
55°
41°
2
58°
34°
3
69°
43°
4
79°
45°
5
57°
45°
6
58°
36°
7
63°
32°
8
66°
47°
9
77°
50°
10
67°
45°
11
68°
44°
12
82°
44°
13
68°
43°
14
72°
38°
15
77°
52°
16
77°
58°
17
84°
64°
18
76°
63°
19
75°
54°
20
69°
47°
21
72°
44°
22
73°
55°
23
78°
54°
24
79°
59°
25
83°
53°
26
85°
54°
27
89°
54°
28
87°
57°
29
86°
50°
30
86°
57°
31
80°
61°
1
82°
56°
2
83°
54°
3
82°
57°
4
83°
62°
5
85°
63°
6
84°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wyoming
Wyoming's May 2026 forecast shows daily high temperatures ranging from 80° to 86°, with overnight lows between 54° and 63°. The average high for May is 83° with an average low of 59°. 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 Wyoming. See also: June | July | August.