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
N/A
25
66°
47°
26
70°
50°
27
73°
55°
28
75°
58°
29
77°
58°
30
74°
57°
1
70°
53°
2
67°
52°
3
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Iserlohn
Iserlohn's September 2026 forecast shows daily high temperatures ranging from 66° to 77°, with overnight lows between 47° and 58°. The average high for September is 71° 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 Iserlohn. See also: October | November | December.
