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
65°
46°
9
72°
49°
10
71°
44°
11
55°
39°
12
58°
46°
13
61°
47°
14
57°
45°
15
58°
45°
16
59°
46°
17
62°
47°
18
62°
48°
19
64°
49°
20
66°
50°
21
66°
53°
22
71°
49°
23
64°
47°
24
67°
50°
25
72°
55°
26
73°
56°
27
74°
56°
28
72°
55°
29
66°
51°
30
66°
55°
31
72°
56°
1
73°
57°
2
75°
57°
3
74°
56°
4
75°
57°
5
74°
57°
6
73°
56°
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 55° to 75°, with overnight lows between 39° and 57°. The average high for May is 67° with an average low of 51°. 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.
