S
M
T
W
T
F
S
26
73°
57°
27
74°
55°
28
75°
54°
29
75°
54°
30
76°
53°
31
76°
60°
1
77°
61°
2
81°
61°
3
81°
56°
4
75°
60°
5
78°
58°
6
76°
58°
7
77°
57°
8
78°
56°
9
74°
55°
10
73°
54°
11
74°
58°
12
74°
55°
13
73°
56°
14
73°
53°
15
74°
51°
16
73°
54°
17
74°
56°
18
76°
60°
19
73°
58°
20
72°
57°
21
72°
58°
22
73°
58°
23
73°
56°
24
72°
55°
25
71°
58°
26
75°
54°
27
75°
54°
28
74°
50°
29
70°
54°
30
70°
59°
31
76°
58°
1
77°
58°
2
77°
57°
3
76°
50°
4
72°
49°
5
71°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bonn
Bonn's August 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 49° and 61°. The average high for August is 75° with an average low of 56°. 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 Bonn. See also: September | October | November.
