S
M
T
W
T
F
S
30
84°
62°
31
78°
61°
1
77°
57°
2
77°
57°
3
76°
60°
4
77°
56°
5
76°
55°
6
76°
55°
7
77°
56°
8
76°
55°
9
76°
53°
10
78°
58°
11
80°
59°
12
81°
59°
13
82°
60°
14
81°
59°
15
77°
58°
16
74°
58°
17
73°
57°
18
73°
54°
19
78°
55°
20
80°
56°
21
79°
55°
22
74°
51°
23
73°
51°
24
74°
57°
25
73°
57°
26
78°
56°
27
77°
56°
28
79°
55°
29
79°
56°
30
78°
48°
1
76°
45°
2
74°
44°
3
68°
43°
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 68° to 84°, with overnight lows between 43° and 62°. The average high for September is 77° 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.
