S
M
T
W
T
F
S
26
66°
32°
27
73°
35°
28
68°
44°
29
56°
45°
30
48°
37°
1
53°
29°
2
48°
35°
3
58°
36°
4
69°
44°
5
72°
47°
6
52°
43°
7
52°
38°
8
56°
38°
9
65°
35°
10
58°
36°
11
53°
30°
12
58°
30°
13
50°
43°
14
55°
44°
15
62°
47°
16
71°
46°
17
76°
53°
18
87°
51°
19
83°
67°
20
69°
47°
21
59°
36°
22
67°
32°
23
67°
42°
24
58°
49°
25
73°
54°
26
82°
53°
27
75°
51°
28
69°
51°
29
71°
48°
30
69°
48°
31
68°
44°
1
70°
47°
2
74°
49°
3
81°
53°
4
82°
59°
5
74°
58°
6
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mountain
Mountain's May 2026 forecast shows daily high temperatures ranging from 68° to 82°, with overnight lows between 44° and 59°. The average high for May is 75° with an average low of 52°. 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. See also: June | July | August.
