S
M
T
W
T
F
S
26
64°
36°
27
68°
34°
28
72°
39°
29
68°
36°
30
68°
45°
1
73°
48°
2
77°
52°
3
70°
54°
4
68°
50°
5
63°
52°
6
52°
46°
7
61°
45°
8
66°
45°
9
72°
41°
10
72°
45°
11
55°
43°
12
54°
39°
13
55°
45°
14
57°
43°
15
57°
39°
16
59°
41°
17
59°
43°
18
61°
46°
19
61°
39°
20
66°
54°
21
72°
52°
22
81°
48°
23
86°
54°
24
82°
55°
25
84°
52°
26
90°
61°
27
82°
53°
28
82°
57°
29
89°
66°
30
83°
63°
31
78°
57°
1
75°
60°
2
79°
58°
3
72°
55°
4
70°
54°
5
72°
54°
6
73°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cologne
Cologne's May 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 53° and 66°. The average high for May is 79° 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 May weather will actually feel in Cologne. See also: June | July | August.
