S
M
T
W
T
F
S
30
87°
65°
31
N/A
1
88°
62°
2
88°
65°
3
87°
65°
4
85°
63°
5
90°
64°
6
83°
64°
7
82°
60°
8
81°
59°
9
83°
57°
10
82°
58°
11
85°
58°
12
80°
56°
13
79°
55°
14
82°
56°
15
79°
59°
16
73°
59°
17
74°
58°
18
77°
59°
19
75°
58°
20
73°
55°
21
75°
52°
22
75°
52°
23
76°
51°
24
78°
58°
25
79°
57°
26
73°
56°
27
71°
57°
28
71°
57°
29
72°
56°
30
75°
55°
1
71°
54°
2
70°
54°
3
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dillsboro
Dillsboro's September 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 51° and 65°. The average high for September is 78° with an average low of 58°. 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 Dillsboro. See also: October | November | December.