S
M
T
W
T
F
S
26
70°
63°
27
75°
59°
28
86°
54°
29
97°
61°
30
88°
64°
31
84°
63°
1
79°
61°
2
88°
57°
3
97°
70°
4
88°
68°
5
84°
66°
6
79°
55°
7
73°
50°
8
82°
50°
9
90°
54°
10
82°
61°
11
79°
54°
12
88°
52°
13
97°
57°
14
99°
64°
15
84°
66°
16
77°
63°
17
72°
59°
18
68°
61°
19
70°
61°
20
72°
61°
21
72°
57°
22
72°
54°
23
68°
50°
24
73°
48°
25
72°
50°
26
79°
55°
27
86°
64°
28
73°
63°
29
73°
63°
30
73°
64°
31
70°
61°
1
72°
57°
2
72°
57°
3
73°
64°
4
75°
63°
5
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Aachen
Aachen's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Aachen. See also: September | October | November.