S
M
T
W
T
F
S
26
57°
44°
27
56°
40°
28
56°
39°
29
57°
39°
30
57°
41°
1
58°
49°
2
60°
45°
3
59°
44°
4
59°
46°
5
60°
48°
6
60°
45°
7
62°
46°
8
68°
51°
9
66°
50°
10
64°
49°
11
69°
52°
12
70°
51°
13
67°
51°
14
69°
50°
15
69°
50°
16
67°
48°
17
68°
52°
18
71°
46°
19
65°
46°
20
65°
48°
21
66°
51°
22
66°
53°
23
67°
54°
24
72°
52°
25
71°
54°
26
74°
54°
27
73°
56°
28
75°
52°
29
72°
50°
30
68°
53°
31
69°
52°
1
68°
51°
2
69°
52°
3
68°
49°
4
68°
49°
5
69°
48°
6
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Trier
Trier's May 2026 forecast shows daily high temperatures ranging from 56° to 75°, with overnight lows between 39° and 56°. The average high for May is 66° 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 Trier. See also: June | July | August.