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
79°
61°
8
80°
59°
9
67°
51°
10
66°
45°
11
70°
50°
12
69°
53°
13
72°
56°
14
71°
53°
15
72°
54°
16
68°
50°
17
67°
47°
18
69°
48°
19
70°
47°
20
66°
51°
21
65°
52°
22
67°
53°
23
68°
52°
24
68°
52°
25
67°
51°
26
66°
49°
27
63°
46°
28
62°
45°
29
60°
45°
30
60°
50°
1
62°
49°
2
64°
46°
3
63°
48°
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 60° to 80°, with overnight lows between 45° and 61°. The average high for September is 67° with an average low of 50°. 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.