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
71°
55°
7
83°
62°
8
67°
53°
9
65°
49°
10
65°
50°
11
66°
51°
12
68°
52°
13
65°
50°
14
65°
52°
15
66°
53°
16
66°
53°
17
65°
50°
18
66°
51°
19
64°
54°
20
65°
53°
21
65°
54°
22
67°
55°
23
68°
55°
24
68°
54°
25
67°
52°
26
64°
48°
27
62°
47°
28
61°
46°
29
63°
46°
30
60°
52°
1
62°
50°
2
60°
47°
3
64°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lünen
Lünen's September 2026 forecast shows daily high temperatures ranging from 60° to 83°, with overnight lows between 46° and 62°. 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 Lünen. See also: October | November | December.