S
M
T
W
T
F
S
26
85°
62°
27
87°
64°
28
88°
65°
29
88°
65°
30
89°
66°
31
89°
65°
1
88°
65°
2
88°
64°
3
81°
56°
4
82°
56°
5
82°
59°
6
83°
62°
7
87°
60°
8
85°
57°
9
82°
64°
10
85°
60°
11
86°
64°
12
88°
65°
13
88°
62°
14
85°
62°
15
85°
63°
16
87°
64°
17
88°
58°
18
81°
57°
19
81°
57°
20
82°
60°
21
85°
63°
22
88°
60°
23
84°
57°
24
80°
55°
25
80°
60°
26
86°
56°
27
80°
54°
28
80°
55°
29
84°
57°
30
85°
62°
31
86°
60°
1
81°
61°
2
79°
60°
3
83°
58°
4
78°
61°
5
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cologne
Cologne's August 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 54° and 66°. The average high for August is 84° with an average low of 61°. 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 Cologne. See also: September | October | November.