S
M
T
W
T
F
S
26
59°
41°
27
65°
43°
28
64°
39°
29
64°
43°
30
65°
44°
1
66°
39°
2
65°
44°
3
68°
45°
4
68°
46°
5
69°
47°
6
69°
48°
7
68°
48°
8
69°
46°
9
66°
42°
10
63°
47°
11
61°
47°
12
70°
48°
13
67°
45°
14
68°
48°
15
71°
50°
16
73°
51°
17
73°
50°
18
74°
40°
19
67°
40°
20
65°
41°
21
67°
42°
22
66°
45°
23
64°
44°
24
63°
48°
25
69°
53°
26
74°
51°
27
76°
52°
28
68°
54°
29
75°
49°
30
76°
46°
31
70°
51°
1
77°
48°
2
79°
56°
3
82°
53°
4
80°
46°
5
72°
44°
6
70°
48°
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 59° to 82°, with overnight lows between 39° and 56°. The average high for May is 69° with an average low of 46°. 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.
