S
M
T
W
T
F
S
26
71°
57°
27
74°
56°
28
75°
59°
29
77°
60°
30
77°
57°
31
79°
66°
1
81°
65°
2
79°
61°
3
72°
59°
4
77°
65°
5
78°
65°
6
79°
63°
7
76°
58°
8
71°
56°
9
71°
56°
10
77°
61°
11
77°
63°
12
76°
58°
13
71°
57°
14
70°
60°
15
71°
59°
16
70°
56°
17
70°
55°
18
69°
53°
19
69°
55°
20
70°
58°
21
69°
53°
22
69°
54°
23
70°
54°
24
68°
55°
25
69°
56°
26
73°
58°
27
72°
59°
28
70°
58°
29
68°
54°
30
67°
53°
31
67°
53°
1
68°
52°
2
66°
51°
3
66°
50°
4
67°
53°
5
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lettenbach
Lettenbach's August 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 50° and 66°. The average high for August is 72° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Lettenbach. See also: September | October | November.