S
M
T
W
T
F
S
26
63°
41°
27
63°
43°
28
66°
46°
29
63°
41°
30
59°
39°
1
66°
43°
2
73°
48°
3
66°
50°
4
63°
43°
5
59°
50°
6
54°
45°
7
54°
43°
8
59°
45°
9
66°
43°
10
64°
50°
11
52°
37°
12
48°
34°
13
52°
41°
14
52°
39°
15
52°
37°
16
52°
39°
17
55°
37°
18
57°
43°
19
57°
41°
20
61°
52°
21
68°
52°
22
73°
52°
23
81°
59°
24
85°
54°
25
86°
55°
26
89°
57°
27
80°
49°
28
79°
50°
29
86°
57°
30
82°
58°
31
79°
58°
1
78°
57°
2
79°
57°
3
78°
56°
4
75°
53°
5
74°
54°
6
67°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Koblenz
Koblenz's May 2026 forecast shows daily high temperatures ranging from 67° to 89°, with overnight lows between 49° and 58°. The average high for May is 80° with an average low of 55°. 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 Koblenz. See also: June | July | August.
