S
M
T
W
T
F
S
30
67°
53°
31
67°
53°
1
68°
52°
2
66°
51°
3
66°
50°
4
67°
53°
5
66°
51°
6
65°
52°
7
65°
51°
8
66°
50°
9
64°
48°
10
65°
54°
11
64°
58°
12
71°
53°
13
70°
50°
14
63°
48°
15
62°
51°
16
63°
47°
17
62°
46°
18
Hist. Avg.
65°
48°
19
Hist. Avg.
64°
48°
20
Hist. Avg.
64°
48°
21
Hist. Avg.
64°
47°
22
Hist. Avg.
63°
47°
23
Hist. Avg.
63°
47°
24
Hist. Avg.
63°
47°
25
Hist. Avg.
62°
46°
26
Hist. Avg.
62°
46°
27
Hist. Avg.
62°
46°
28
Hist. Avg.
61°
46°
29
Hist. Avg.
61°
45°
30
Hist. Avg.
61°
45°
1
Hist. Avg.
60°
45°
2
Hist. Avg.
60°
45°
3
Hist. Avg.
60°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lettenbach
Lettenbach's September 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 46° and 58°. 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 Lettenbach. See also: October | November | December.
