S
M
T
W
T
F
S
30
88°
66°
31
94°
69°
1
95°
72°
2
97°
72°
3
97°
72°
4
94°
71°
5
90°
67°
6
81°
64°
7
82°
64°
8
81°
63°
9
85°
64°
10
88°
62°
11
89°
61°
12
79°
59°
13
80°
58°
14
84°
65°
15
82°
64°
16
76°
64°
17
75°
63°
18
79°
61°
19
75°
58°
20
75°
55°
21
76°
54°
22
76°
56°
23
79°
60°
24
81°
62°
25
79°
61°
26
76°
60°
27
73°
61°
28
75°
61°
29
77°
60°
30
76°
57°
1
71°
54°
2
70°
55°
3
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Roanoke
Roanoke's September 2026 forecast shows daily high temperatures ranging from 70° to 97°, with overnight lows between 54° and 72°. The average high for September is 81° with an average low of 62°. 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 Roanoke. See also: October | November | December.