S
M
T
W
T
F
S
30
77°
62°
31
74°
58°
1
73°
53°
2
72°
58°
3
75°
58°
4
78°
60°
5
77°
56°
6
76°
56°
7
75°
57°
8
76°
58°
9
66°
53°
10
67°
57°
11
71°
54°
12
66°
51°
13
65°
52°
14
64°
50°
15
65°
50°
16
67°
54°
17
65°
51°
18
67°
51°
19
69°
52°
20
63°
54°
21
63°
49°
22
64°
47°
23
62°
47°
24
63°
51°
25
62°
51°
26
61°
50°
27
62°
47°
28
66°
53°
29
68°
52°
30
67°
53°
1
67°
52°
2
66°
52°
3
68°
51°
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 61° to 78°, with overnight lows between 47° and 62°. The average high for September is 68° with an average low of 53°. 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.
