S
M
T
W
T
F
S
26
69°
47°
27
63°
42°
28
69°
47°
29
68°
53°
30
58°
44°
1
59°
40°
2
54°
37°
3
55°
33°
4
71°
47°
5
76°
55°
6
70°
58°
7
61°
41°
8
63°
44°
9
69°
48°
10
74°
56°
11
67°
46°
12
60°
41°
13
68°
51°
14
68°
53°
15
70°
50°
16
69°
53°
17
70°
51°
18
76°
53°
19
74°
53°
20
77°
54°
21
75°
52°
22
73°
46°
23
68°
45°
24
69°
47°
25
70°
49°
26
73°
47°
27
69°
47°
28
70°
48°
29
71°
50°
30
73°
52°
31
72°
54°
1
76°
57°
2
73°
56°
3
73°
55°
4
74°
54°
5
77°
57°
6
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mountain City
Mountain City's May 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 41° and 58°. The average high for May is 71° with an average low of 51°. 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 City. See also: June | July | August.