S
M
T
W
T
F
S
30
86°
61°
31
82°
69°
1
94°
71°
2
86°
70°
3
86°
70°
4
87°
68°
5
81°
62°
6
79°
56°
7
78°
54°
8
83°
54°
9
90°
58°
10
84°
71°
11
82°
64°
12
78°
61°
13
86°
71°
14
73°
52°
15
76°
47°
16
85°
66°
17
82°
67°
18
78°
55°
19
72°
63°
20
72°
62°
21
67°
59°
22
69°
55°
23
68°
57°
24
72°
52°
25
70°
50°
26
71°
50°
27
73°
51°
28
73°
49°
29
71°
48°
30
72°
51°
1
70°
52°
2
71°
53°
3
64°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Loudon
Fort Loudon's September 2026 forecast shows daily high temperatures ranging from 64° to 85°, with overnight lows between 48° and 67°. The average high for September is 72° 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 Fort Loudon. See also: October | November | December.