S
M
T
W
T
F
S
26
80°
63°
27
80°
62°
28
79°
64°
29
78°
62°
30
74°
63°
31
78°
63°
1
79°
62°
2
79°
63°
3
78°
63°
4
78°
62°
5
77°
62°
6
74°
57°
7
77°
58°
8
77°
59°
9
76°
62°
10
78°
62°
11
77°
61°
12
78°
63°
13
78°
64°
14
77°
59°
15
72°
57°
16
71°
55°
17
71°
55°
18
76°
59°
19
74°
60°
20
71°
58°
21
69°
56°
22
69°
54°
23
70°
57°
24
72°
58°
25
75°
53°
26
70°
52°
27
68°
57°
28
73°
52°
29
67°
53°
30
70°
52°
31
73°
51°
1
66°
52°
2
66°
56°
3
67°
51°
4
66°
50°
5
65°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sielenbach
Sielenbach's August 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 49° and 64°. The average high for August is 74° with an average low of 58°. 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 Sielenbach. See also: September | October | November.