S
M
T
W
T
F
S
26
58°
36°
27
61°
38°
28
62°
41°
29
60°
40°
30
61°
40°
1
68°
43°
2
70°
48°
3
57°
52°
4
59°
48°
5
57°
47°
6
49°
43°
7
54°
42°
8
58°
45°
9
64°
42°
10
61°
47°
11
49°
36°
12
47°
34°
13
48°
39°
14
47°
38°
15
49°
37°
16
51°
36°
17
53°
40°
18
54°
44°
19
55°
42°
20
58°
50°
21
66°
50°
22
75°
48°
23
79°
55°
24
78°
57°
25
78°
53°
26
82°
56°
27
76°
60°
28
74°
53°
29
N/A
30
77°
58°
31
70°
51°
1
67°
50°
2
64°
49°
3
62°
49°
4
60°
46°
5
59°
46°
6
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Monschau
Monschau's May 2026 forecast shows daily high temperatures ranging from 59° to 77°, with overnight lows between 45° and 58°. The average high for May is 65° 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 Monschau. See also: June | July | August.