S
M
T
W
T
F
S
30
73°
61°
31
70°
57°
1
72°
55°
2
73°
54°
3
73°
55°
4
82°
61°
5
72°
52°
6
73°
56°
7
83°
63°
8
82°
56°
9
62°
49°
10
64°
50°
11
65°
51°
12
66°
54°
13
67°
55°
14
68°
57°
15
71°
57°
16
63°
52°
17
61°
51°
18
60°
50°
19
62°
52°
20
66°
50°
21
67°
53°
22
66°
52°
23
68°
52°
24
69°
51°
25
69°
52°
26
68°
47°
27
63°
45°
28
63°
44°
29
64°
44°
30
64°
51°
1
61°
46°
2
59°
45°
3
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Langenburg
Langenburg's September 2026 forecast shows daily high temperatures ranging from 59° to 83°, with overnight lows between 44° and 63°. The average high for September is 66° with an average low of 51°. 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 Langenburg. See also: October | November | December.