S
M
T
W
T
F
S
30
71°
60°
31
70°
60°
1
71°
61°
2
76°
61°
3
78°
61°
4
82°
63°
5
82°
65°
6
82°
65°
7
81°
66°
8
73°
64°
9
81°
54°
10
65°
53°
11
68°
51°
12
68°
52°
13
68°
51°
14
72°
53°
15
77°
51°
16
79°
50°
17
77°
49°
18
75°
55°
19
77°
56°
20
78°
57°
21
79°
58°
22
81°
58°
23
80°
57°
24
77°
57°
25
76°
58°
26
74°
58°
27
76°
57°
28
75°
59°
29
76°
59°
30
80°
58°
1
75°
58°
2
75°
57°
3
76°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Black Mountain
Black Mountain's September 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 49° and 59°. The average high for September is 75° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Black Mountain. See also: October | November | December.
