S
M
T
W
T
F
S
30
72°
63°
31
72°
61°
1
72°
57°
2
70°
55°
3
72°
61°
4
75°
55°
5
70°
47°
6
74°
59°
7
83°
61°
8
65°
53°
9
64°
49°
10
64°
51°
11
65°
53°
12
64°
51°
13
64°
50°
14
65°
52°
15
63°
51°
16
64°
52°
17
62°
49°
18
65°
49°
19
68°
55°
20
67°
54°
21
67°
52°
22
66°
54°
23
67°
54°
24
66°
50°
25
67°
55°
26
68°
54°
27
65°
53°
28
64°
53°
29
63°
52°
30
63°
47°
1
58°
46°
2
57°
46°
3
56°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Herdecke
Herdecke's September 2026 forecast shows daily high temperatures ranging from 56° to 83°, with overnight lows between 45° and 61°. The average high for September is 66° with an average low of 52°. 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 Herdecke. See also: October | November | December.
