S
M
T
W
T
F
S
30
82°
70°
31
92°
74°
1
95°
73°
2
94°
71°
3
96°
74°
4
96°
73°
5
92°
70°
6
84°
62°
7
83°
57°
8
89°
70°
9
82°
66°
10
81°
54°
11
81°
63°
12
85°
64°
13
79°
62°
14
81°
64°
15
77°
55°
16
75°
54°
17
76°
55°
18
72°
52°
19
73°
50°
20
74°
52°
21
77°
51°
22
73°
56°
23
74°
55°
24
80°
56°
25
80°
56°
26
80°
55°
27
80°
56°
28
81°
57°
29
80°
57°
30
79°
56°
1
77°
50°
2
69°
45°
3
65°
41°
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 65° to 89°, with overnight lows between 41° and 70°. The average high for September is 78° with an average low of 56°. 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.