S
M
T
W
T
F
S
30
89°
69°
31
78°
68°
1
81°
68°
2
87°
69°
3
86°
64°
4
88°
62°
5
N/A
6
90°
71°
7
89°
64°
8
77°
59°
9
79°
63°
10
80°
66°
11
85°
65°
12
89°
68°
13
94°
72°
14
95°
73°
15
84°
65°
16
84°
64°
17
83°
63°
18
85°
64°
19
82°
62°
20
83°
65°
21
83°
63°
22
84°
60°
23
84°
62°
24
83°
62°
25
83°
64°
26
76°
61°
27
74°
60°
28
77°
58°
29
81°
62°
30
82°
61°
1
79°
60°
2
80°
56°
3
79°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lyuksemburg
Lyuksemburg's September 2026 forecast shows daily high temperatures ranging from 74° to 95°, with overnight lows between 56° and 73°. The average high for September is 83° with an average low of 63°. 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 Lyuksemburg. See also: October | November | December.
