S
M
T
W
T
F
S
26
82°
66°
27
80°
66°
28
80°
65°
29
81°
66°
30
81°
66°
31
84°
65°
1
85°
66°
2
85°
66°
3
87°
65°
4
85°
65°
5
82°
62°
6
84°
63°
7
82°
59°
8
83°
60°
9
82°
59°
10
82°
60°
11
87°
65°
12
88°
65°
13
88°
64°
14
87°
64°
15
83°
65°
16
83°
65°
17
84°
61°
18
82°
63°
19
84°
60°
20
82°
63°
21
86°
63°
22
84°
62°
23
86°
63°
24
87°
60°
25
87°
61°
26
88°
62°
27
87°
63°
28
86°
64°
29
86°
64°
30
85°
62°
31
84°
56°
1
81°
55°
2
80°
56°
3
82°
57°
4
85°
61°
5
85°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Black Mountain
Black Mountain's August 2026 forecast shows daily high temperatures ranging from 80° to 88°, with overnight lows between 55° and 66°. The average high for August is 84° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Black Mountain. See also: September | October | November.