S
M
T
W
T
F
S
30
81°
58°
31
81°
62°
1
86°
58°
2
85°
61°
3
84°
61°
4
83°
55°
5
80°
61°
6
84°
60°
7
81°
60°
8
84°
59°
9
81°
60°
10
79°
59°
11
84°
60°
12
85°
59°
13
83°
59°
14
84°
58°
15
84°
59°
16
83°
59°
17
83°
56°
18
82°
51°
19
76°
50°
20
76°
48°
21
75°
49°
22
75°
50°
23
77°
51°
24
80°
48°
25
77°
52°
26
80°
54°
27
78°
52°
28
78°
52°
29
77°
51°
30
78°
51°
1
76°
49°
2
78°
50°
3
73°
50°
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 73° to 86°, with overnight lows between 48° and 62°. The average high for September is 80° 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.
