S
M
T
W
T
F
S
30
85°
66°
31
89°
66°
1
91°
65°
2
92°
66°
3
91°
66°
4
91°
67°
5
90°
68°
6
87°
66°
7
71°
59°
8
77°
56°
9
81°
62°
10
82°
65°
11
81°
64°
12
80°
60°
13
84°
61°
14
85°
62°
15
80°
61°
16
79°
60°
17
78°
59°
18
81°
57°
19
76°
56°
20
78°
53°
21
81°
58°
22
79°
58°
23
79°
57°
24
78°
57°
25
79°
56°
26
79°
57°
27
80°
57°
28
79°
56°
29
78°
56°
30
78°
55°
1
77°
56°
2
76°
54°
3
74°
49°
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 85°, with overnight lows between 49° and 65°. The average high for September is 79° with an average low of 58°. 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.
