S
M
T
W
T
F
S
26
84°
68°
27
85°
65°
28
86°
65°
29
84°
68°
30
85°
70°
31
88°
69°
1
86°
64°
2
85°
64°
3
83°
66°
4
83°
63°
5
84°
63°
6
83°
64°
7
83°
63°
8
84°
64°
9
83°
67°
10
83°
69°
11
84°
69°
12
85°
67°
13
86°
68°
14
88°
62°
15
88°
62°
16
83°
66°
17
85°
66°
18
87°
63°
19
83°
62°
20
82°
61°
21
81°
66°
22
82°
62°
23
82°
67°
24
81°
67°
25
86°
66°
26
84°
67°
27
86°
67°
28
87°
66°
29
87°
67°
30
86°
60°
31
82°
60°
1
80°
61°
2
80°
63°
3
81°
64°
4
80°
59°
5
85°
60°
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 80° to 88°, with overnight lows between 59° and 70°. The average high for August is 84° with an average low of 65°. 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.