S
M
T
W
T
F
S
30
68°
59°
31
64°
54°
1
64°
54°
2
63°
55°
3
66°
55°
4
73°
54°
5
63°
52°
6
66°
48°
7
79°
59°
8
75°
52°
9
61°
48°
10
63°
48°
11
64°
49°
12
65°
49°
13
64°
51°
14
67°
51°
15
69°
52°
16
65°
50°
17
63°
49°
18
64°
51°
19
64°
50°
20
65°
49°
21
61°
52°
22
62°
53°
23
63°
52°
24
63°
52°
25
62°
48°
26
61°
44°
27
58°
44°
28
58°
43°
29
59°
43°
30
57°
50°
1
59°
46°
2
56°
45°
3
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Attendorn
Attendorn's September 2026 forecast shows daily high temperatures ranging from 56° to 75°, with overnight lows between 43° and 53°. The average high for September is 63° with an average low of 49°. 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 Attendorn. See also: October | November | December.