S
M
T
W
T
F
S
26
85°
68°
27
86°
68°
28
90°
69°
29
84°
67°
30
80°
60°
31
84°
56°
1
82°
61°
2
85°
70°
3
84°
65°
4
83°
67°
5
81°
67°
6
82°
66°
7
83°
67°
8
83°
65°
9
84°
65°
10
87°
67°
11
89°
68°
12
85°
66°
13
87°
69°
14
88°
68°
15
86°
68°
16
89°
68°
17
92°
67°
18
86°
66°
19
86°
64°
20
88°
65°
21
85°
62°
22
88°
62°
23
85°
63°
24
85°
62°
25
84°
62°
26
80°
60°
27
85°
63°
28
83°
63°
29
82°
63°
30
84°
62°
31
85°
63°
1
83°
62°
2
84°
63°
3
84°
63°
4
85°
62°
5
84°
62°
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 92°, with overnight lows between 60° and 68°. The average high for August is 85° with an average low of 64°. 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.