S
M
T
W
T
F
S
26
55°
39°
27
57°
36°
28
67°
37°
29
71°
46°
30
72°
50°
1
77°
59°
2
76°
58°
3
71°
45°
4
58°
42°
5
58°
42°
6
73°
43°
7
81°
60°
8
83°
60°
9
84°
56°
10
89°
61°
11
87°
64°
12
88°
62°
13
79°
58°
14
82°
55°
15
82°
60°
16
74°
54°
17
70°
52°
18
66°
46°
19
71°
50°
20
78°
54°
21
81°
58°
22
82°
62°
23
63°
49°
24
63°
51°
25
63°
49°
26
59°
46°
27
52°
40°
28
59°
41°
29
64°
42°
30
69°
45°
31
71°
47°
1
74°
46°
2
74°
47°
3
75°
46°
4
73°
47°
5
69°
45°
6
71°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mountain High
Mountain High's May 2026 forecast shows daily high temperatures ranging from 52° to 75°, with overnight lows between 40° and 51°. The average high for May is 67° with an average low of 46°. 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 Mountain High. See also: June | July | August.