S
M
T
W
T
F
S
30
77°
63°
31
75°
61°
1
73°
55°
2
77°
52°
3
77°
54°
4
84°
61°
5
75°
55°
6
75°
48°
7
82°
55°
8
88°
60°
9
65°
47°
10
67°
45°
11
67°
47°
12
69°
46°
13
72°
50°
14
71°
52°
15
74°
53°
16
71°
51°
17
69°
50°
18
68°
48°
19
69°
49°
20
62°
49°
21
64°
50°
22
65°
47°
23
66°
50°
24
67°
50°
25
67°
52°
26
66°
50°
27
62°
47°
28
65°
47°
29
64°
45°
30
64°
50°
1
58°
44°
2
59°
45°
3
62°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Langenau
Langenau's September 2026 forecast shows daily high temperatures ranging from 58° to 88°, with overnight lows between 44° and 60°. The average high for September is 68° with an average low of 49°. 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 Langenau. See also: October | November | December.