S
M
T
W
T
F
S
30
90°
70°
31
89°
70°
1
90°
71°
2
90°
70°
3
89°
70°
4
86°
67°
5
86°
66°
6
88°
66°
7
89°
68°
8
90°
69°
9
90°
69°
10
89°
68°
11
90°
69°
12
89°
69°
13
89°
67°
14
87°
65°
15
89°
67°
16
88°
67°
17
89°
66°
18
88°
63°
19
87°
58°
20
80°
60°
21
80°
58°
22
81°
58°
23
82°
62°
24
85°
63°
25
85°
61°
26
80°
58°
27
78°
61°
28
82°
60°
29
80°
61°
30
83°
60°
1
83°
60°
2
82°
59°
3
83°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Roanoke Junction
Roanoke Junction's September 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 58° and 71°. The average high for September is 86° with an average low of 64°. 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 Junction. See also: October | November | December.