S
M
T
W
T
F
S
30
83°
58°
31
87°
59°
1
86°
62°
2
87°
61°
3
83°
57°
4
82°
58°
5
85°
57°
6
86°
62°
7
86°
59°
8
83°
57°
9
86°
61°
10
86°
61°
11
85°
60°
12
85°
61°
13
86°
59°
14
83°
55°
15
80°
54°
16
82°
56°
17
84°
58°
18
83°
56°
19
84°
58°
20
83°
59°
21
78°
57°
22
81°
56°
23
81°
55°
24
82°
56°
25
80°
51°
26
79°
55°
27
80°
55°
28
80°
53°
29
81°
54°
30
Hist. Avg.
76°
51°
1
Hist. Avg.
76°
51°
2
Hist. Avg.
75°
50°
3
Hist. Avg.
75°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Greeneville
Greeneville's September 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 51° and 62°. The average high for September is 83° with an average low of 57°. 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 Greeneville. See also: October | November | December.
