S
M
T
W
T
F
S
26
63°
39°
27
64°
36°
28
70°
41°
29
66°
41°
30
66°
43°
1
73°
48°
2
75°
46°
3
66°
52°
4
66°
50°
5
59°
50°
6
50°
46°
7
59°
46°
8
63°
45°
9
70°
41°
10
68°
48°
11
52°
39°
12
52°
39°
13
55°
45°
14
54°
43°
15
54°
39°
16
57°
39°
17
57°
43°
18
61°
46°
19
62°
54°
20
66°
51°
21
76°
51°
22
81°
56°
23
85°
60°
24
82°
57°
25
82°
56°
26
84°
61°
27
83°
59°
28
81°
58°
29
77°
55°
30
75°
54°
31
76°
56°
1
64°
49°
2
65°
48°
3
65°
48°
4
66°
51°
5
65°
56°
6
69°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grevenbroich
Grevenbroich's May 2026 forecast shows daily high temperatures ranging from 62° to 85°, with overnight lows between 48° and 61°. The average high for May is 74° 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 Grevenbroich. See also: June | July | August.