S
M
T
W
T
F
S
30
78°
60°
31
78°
62°
1
79°
62°
2
79°
60°
3
78°
54°
4
77°
52°
5
76°
53°
6
77°
53°
7
79°
54°
8
82°
57°
9
82°
59°
10
80°
52°
11
76°
51°
12
75°
55°
13
76°
50°
14
74°
50°
15
73°
49°
16
72°
48°
17
73°
49°
18
74°
51°
19
76°
49°
20
74°
53°
21
78°
53°
22
75°
55°
23
79°
55°
24
75°
54°
25
75°
55°
26
74°
54°
27
75°
53°
28
79°
53°
29
78°
52°
30
76°
52°
1
76°
53°
2
77°
47°
3
77°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nashville
Nashville's September 2026 forecast shows daily high temperatures ranging from 72° to 82°, with overnight lows between 42° and 62°. The average high for September is 77° with an average low of 53°. 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 Nashville. See also: October | November | December.