S
M
T
W
T
F
S
30
81°
58°
31
82°
61°
1
81°
60°
2
79°
57°
3
78°
56°
4
77°
54°
5
78°
54°
6
80°
56°
7
80°
55°
8
82°
58°
9
82°
56°
10
81°
54°
11
82°
55°
12
82°
59°
13
81°
59°
14
82°
58°
15
82°
58°
16
80°
59°
17
81°
56°
18
79°
56°
19
78°
57°
20
79°
55°
21
77°
56°
22
77°
51°
23
73°
55°
24
72°
55°
25
Hist. Avg.
74°
52°
26
Hist. Avg.
74°
52°
27
Hist. Avg.
73°
52°
28
Hist. Avg.
73°
51°
29
Hist. Avg.
73°
51°
30
Hist. Avg.
72°
50°
1
Hist. Avg.
72°
50°
2
Hist. Avg.
72°
50°
3
Hist. Avg.
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Black Mountain
Black Mountain's September 2026 forecast shows daily high temperatures ranging from 72° to 82°, with overnight lows between 51° and 61°. The average high for September is 79° with an average low of 56°. 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.
