S
M
T
W
T
F
S
26
74°
36°
27
75°
35°
28
76°
35°
29
75°
37°
30
76°
44°
1
74°
40°
2
75°
39°
3
73°
49°
4
73°
50°
5
63°
44°
6
64°
33°
7
65°
41°
8
58°
39°
9
64°
37°
10
69°
33°
11
70°
40°
12
69°
43°
13
65°
45°
14
65°
39°
15
69°
47°
16
67°
47°
17
68°
40°
18
66°
50°
19
57°
42°
20
59°
33°
21
61°
31°
22
61°
33°
23
63°
45°
24
N/A
25
66°
49°
26
56°
50°
27
64°
49°
28
61°
51°
29
63°
49°
30
59°
43°
31
57°
36°
1
56°
40°
2
55°
41°
3
54°
40°
4
56°
37°
5
55°
36°
6
53°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Black Mountain
Black Mountain's May 2026 forecast shows daily high temperatures ranging from 53° to 66°, with overnight lows between 36° and 51°. The average high for May is 58° with an average low of 43°. 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 Black Mountain. See also: June | July | August.