S
M
T
W
T
F
S
26
93°
70°
27
89°
74°
28
86°
68°
29
87°
68°
30
84°
69°
31
70°
61°
1
82°
63°
2
84°
59°
3
84°
65°
4
74°
57°
5
76°
54°
6
80°
54°
7
76°
57°
8
79°
53°
9
83°
63°
10
82°
64°
11
84°
66°
12
85°
67°
13
78°
67°
14
79°
64°
15
82°
69°
16
78°
62°
17
81°
56°
18
80°
61°
19
80°
61°
20
85°
61°
21
83°
61°
22
81°
57°
23
80°
58°
24
81°
60°
25
84°
57°
26
81°
59°
27
80°
57°
28
82°
60°
29
81°
59°
30
83°
60°
31
81°
61°
1
78°
56°
2
72°
54°
3
72°
54°
4
78°
59°
5
76°
58°
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 72° to 85°, with overnight lows between 54° and 61°. The average high for August is 80° 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 Cologne. See also: September | October | November.