S
M
T
W
T
F
S
30
77°
61°
31
76°
59°
1
73°
58°
2
74°
52°
3
74°
56°
4
78°
62°
5
70°
56°
6
71°
51°
7
81°
54°
8
83°
61°
9
70°
57°
10
N/A
11
71°
54°
12
70°
55°
13
65°
56°
14
68°
52°
15
74°
54°
16
66°
51°
17
65°
52°
18
64°
49°
19
65°
51°
20
68°
48°
21
68°
46°
22
65°
47°
23
67°
51°
24
66°
50°
25
66°
50°
26
60°
48°
27
62°
49°
28
62°
44°
29
57°
43°
30
58°
43°
1
57°
42°
2
58°
44°
3
61°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Osterburg
Osterburg's September 2026 forecast shows daily high temperatures ranging from 57° to 74°, with overnight lows between 42° and 56°. The average high for September is 64° with an average low of 49°. 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.