S
M
T
W
T
F
S
26
55°
37°
27
61°
34°
28
59°
39°
29
54°
36°
30
61°
30°
1
70°
39°
2
77°
43°
3
81°
54°
4
73°
59°
5
70°
54°
6
66°
52°
7
52°
45°
8
52°
45°
9
61°
48°
10
70°
48°
11
66°
45°
12
46°
41°
13
54°
41°
14
57°
46°
15
57°
41°
16
N/A
17
65°
40°
18
69°
45°
19
67°
46°
20
68°
50°
21
69°
49°
22
71°
49°
23
76°
52°
24
78°
51°
25
74°
51°
26
71°
49°
27
71°
50°
28
73°
49°
29
65°
46°
30
66°
47°
31
67°
48°
1
65°
48°
2
65°
47°
3
66°
47°
4
66°
48°
5
67°
52°
6
67°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Koblenz
Koblenz's May 2026 forecast shows daily high temperatures ranging from 65° to 78°, with overnight lows between 40° and 56°. The average high for May is 69° with an average low of 49°. 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.
