S
M
T
W
T
F
S
30
71°
57°
31
70°
56°
1
73°
51°
2
69°
51°
3
69°
55°
4
70°
50°
5
68°
51°
6
69°
50°
7
68°
52°
8
72°
56°
9
73°
55°
10
72°
55°
11
66°
49°
12
69°
51°
13
66°
52°
14
69°
53°
15
72°
55°
16
72°
50°
17
68°
55°
18
71°
56°
19
71°
54°
20
70°
48°
21
64°
47°
22
63°
46°
23
64°
47°
24
64°
51°
25
65°
55°
26
64°
54°
27
70°
52°
28
68°
52°
29
68°
47°
30
61°
45°
1
61°
44°
2
62°
43°
3
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cologne
Cologne's September 2026 forecast shows daily high temperatures ranging from 60° to 73°, with overnight lows between 43° and 57°. The average high for September is 68° 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 Cologne. See also: October | November | December.
