S
M
T
W
T
F
S
30
72°
63°
31
72°
61°
1
72°
57°
2
70°
55°
3
72°
61°
4
75°
59°
5
68°
50°
6
75°
48°
7
86°
64°
8
77°
61°
9
66°
54°
10
66°
52°
11
72°
52°
12
70°
59°
13
66°
59°
14
72°
55°
15
81°
63°
16
66°
55°
17
66°
54°
18
64°
55°
19
73°
59°
20
66°
52°
21
64°
52°
22
66°
48°
23
68°
48°
24
63°
46°
25
72°
45°
26
73°
54°
27
82°
54°
28
N/A
29
82°
56°
30
84°
64°
1
68°
53°
2
68°
48°
3
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dortmund
Dortmund's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 48° and 64°. The average high for September is 74° with an average low of 54°. 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 Dortmund. See also: October | November | December.
