S
M
T
W
T
F
S
30
72°
61°
31
68°
57°
1
70°
54°
2
70°
55°
3
73°
57°
4
81°
63°
5
72°
57°
6
77°
50°
7
84°
61°
8
77°
61°
9
64°
50°
10
66°
46°
11
70°
48°
12
72°
55°
13
68°
61°
14
75°
61°
15
82°
59°
16
68°
54°
17
66°
48°
18
64°
52°
19
72°
46°
20
66°
50°
21
66°
46°
22
68°
48°
23
72°
48°
24
64°
48°
25
72°
46°
26
79°
50°
27
79°
55°
28
79°
61°
29
81°
59°
30
82°
63°
1
66°
57°
2
66°
52°
3
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Luxembourg
Luxembourg's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Luxembourg. See also: October | November | December.
