S
M
T
W
T
F
S
30
74°
54°
31
67°
51°
1
69°
50°
2
69°
50°
3
68°
52°
4
69°
51°
5
66°
49°
6
66°
48°
7
65°
50°
8
65°
54°
9
66°
50°
10
66°
52°
11
70°
54°
12
70°
53°
13
68°
53°
14
69°
50°
15
64°
53°
16
65°
47°
17
63°
52°
18
68°
53°
19
69°
51°
20
64°
52°
21
67°
53°
22
69°
52°
23
69°
50°
24
66°
45°
25
63°
50°
26
66°
50°
27
65°
47°
28
59°
49°
29
58°
50°
30
61°
48°
1
63°
50°
2
66°
50°
3
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Osterburg
Osterburg's September 2026 forecast shows daily high temperatures ranging from 58° to 74°, with overnight lows between 45° and 54°. The average high for September is 66° 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 Osterburg. See also: October | November | December.