S
M
T
W
T
F
S
30
88°
60°
31
86°
62°
1
81°
63°
2
82°
56°
3
84°
58°
4
86°
62°
5
87°
62°
6
87°
55°
7
79°
54°
8
79°
54°
9
80°
55°
10
85°
56°
11
84°
57°
12
84°
59°
13
77°
56°
14
80°
60°
15
83°
59°
16
84°
52°
17
77°
51°
18
76°
50°
19
75°
51°
20
76°
54°
21
74°
50°
22
74°
50°
23
75°
54°
24
73°
56°
25
76°
55°
26
80°
55°
27
79°
52°
28
79°
54°
29
78°
53°
30
72°
54°
1
73°
51°
2
72°
46°
3
71°
44°
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 71° to 88°, with overnight lows between 44° and 63°. The average high for September is 79° 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.
