S
M
T
W
T
F
S
30
72°
51°
31
76°
55°
1
79°
48°
2
73°
49°
3
72°
48°
4
73°
49°
5
73°
56°
6
78°
54°
7
79°
54°
8
72°
53°
9
70°
55°
10
75°
53°
11
73°
51°
12
73°
53°
13
70°
51°
14
69°
45°
15
68°
45°
16
68°
44°
17
69°
45°
18
68°
50°
19
73°
51°
20
74°
52°
21
73°
47°
22
68°
43°
23
67°
48°
24
66°
49°
25
72°
42°
26
65°
47°
27
64°
43°
28
Hist. Avg.
70°
50°
29
Hist. Avg.
70°
49°
30
Hist. Avg.
69°
49°
1
Hist. Avg.
69°
48°
2
Hist. Avg.
69°
48°
3
Hist. Avg.
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Back Mountain
Back Mountain's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 42° and 56°. The average high for September is 71° with an average low of 49°. 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 Back Mountain. See also: October | November | December.
