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
86°
67°
11
88°
66°
12
88°
67°
13
88°
68°
14
89°
66°
15
87°
65°
16
87°
63°
17
86°
65°
18
84°
63°
19
84°
62°
20
83°
61°
21
83°
62°
22
85°
63°
23
86°
60°
24
81°
60°
25
83°
62°
26
84°
63°
27
85°
63°
28
85°
64°
29
84°
64°
30
82°
63°
31
77°
62°
1
77°
63°
2
78°
63°
3
79°
62°
4
81°
62°
5
82°
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 77° to 89°, with overnight lows between 60° and 68°. The average high for August is 84° with an average low of 63°. 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.