S
M
T
W
T
F
S
30
81°
64°
31
77°
57°
1
75°
57°
2
73°
55°
3
77°
55°
4
77°
57°
5
69°
52°
6
69°
50°
7
75°
58°
8
73°
54°
9
68°
50°
10
66°
51°
11
67°
51°
12
66°
52°
13
68°
49°
14
67°
50°
15
65°
50°
16
64°
49°
17
62°
47°
18
63°
45°
19
67°
49°
20
68°
52°
21
65°
52°
22
66°
51°
23
67°
51°
24
67°
50°
25
66°
51°
26
68°
51°
27
68°
50°
28
63°
46°
29
65°
49°
30
64°
46°
1
63°
43°
2
56°
42°
3
57°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Köpenick
Köpenick's September 2026 forecast shows daily high temperatures ranging from 56° to 77°, with overnight lows between 42° and 58°. The average high for September is 66° 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 Köpenick. See also: October | November | December.