S
M
T
W
T
F
S
30
88°
67°
31
92°
66°
1
94°
68°
2
94°
69°
3
96°
70°
4
92°
68°
5
88°
65°
6
79°
60°
7
81°
63°
8
83°
62°
9
82°
65°
10
86°
61°
11
84°
56°
12
81°
58°
13
83°
58°
14
83°
61°
15
82°
60°
16
75°
60°
17
75°
59°
18
79°
59°
19
76°
58°
20
75°
56°
21
76°
50°
22
76°
52°
23
77°
55°
24
81°
58°
25
81°
57°
26
75°
57°
27
72°
58°
28
74°
57°
29
75°
56°
30
78°
55°
1
72°
54°
2
71°
53°
3
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Elizabethton
Elizabethton's September 2026 forecast shows daily high temperatures ranging from 71° to 96°, with overnight lows between 50° and 70°. The average high for September is 81° with an average low of 59°. 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 Elizabethton. See also: October | November | December.