S
M
T
W
T
F
S
30
93°
67°
31
91°
68°
1
94°
69°
2
94°
70°
3
93°
71°
4
93°
70°
5
93°
70°
6
90°
68°
7
83°
65°
8
81°
63°
9
86°
65°
10
87°
65°
11
84°
63°
12
82°
64°
13
83°
61°
14
82°
62°
15
81°
57°
16
73°
60°
17
73°
59°
18
71°
60°
19
73°
60°
20
73°
59°
21
74°
60°
22
74°
60°
23
76°
59°
24
74°
58°
25
75°
59°
26
76°
58°
27
75°
51°
28
68°
48°
29
67°
47°
30
69°
47°
1
68°
48°
2
69°
55°
3
68°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gatlinburg
Gatlinburg's September 2026 forecast shows daily high temperatures ranging from 67° to 94°, with overnight lows between 47° and 71°. The average high for September is 78° with an average low of 60°. 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 Gatlinburg. See also: October | November | December.
