S
M
T
W
T
F
S
30
73°
64°
31
70°
61°
1
72°
57°
2
72°
57°
3
73°
64°
4
75°
63°
5
70°
52°
6
77°
50°
7
88°
59°
8
76°
52°
9
65°
49°
10
67°
53°
11
68°
54°
12
71°
55°
13
69°
58°
14
71°
56°
15
77°
55°
16
68°
52°
17
67°
52°
18
69°
53°
19
68°
53°
20
69°
52°
21
66°
54°
22
67°
54°
23
68°
53°
24
68°
54°
25
67°
51°
26
65°
47°
27
62°
46°
28
63°
45°
29
64°
45°
30
61°
52°
1
63°
49°
2
61°
47°
3
65°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alsdorf
Alsdorf's September 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 45° and 58°. The average high for September is 67° 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 Alsdorf. See also: October | November | December.
