S
M
T
W
T
F
S
30
81°
48°
31
87°
51°
1
74°
56°
2
63°
53°
3
68°
53°
4
68°
54°
5
71°
53°
6
69°
53°
7
77°
52°
8
83°
49°
9
93°
52°
10
89°
54°
11
79°
53°
12
69°
51°
13
68°
53°
14
74°
52°
15
71°
47°
16
78°
53°
17
81°
52°
18
79°
51°
19
80°
51°
20
82°
53°
21
77°
54°
22
78°
48°
23
78°
52°
24
82°
53°
25
79°
52°
26
80°
52°
27
80°
53°
28
78°
52°
29
76°
50°
30
71°
45°
1
70°
47°
2
71°
48°
3
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Roseburg
Roseburg's September 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 45° and 54°. The average high for September is 77° with an average low of 51°. 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 Roseburg. See also: October | November | December.
