S
M
T
W
T
F
S
26
59°
37°
27
63°
36°
28
63°
41°
29
63°
39°
30
64°
37°
1
73°
41°
2
75°
55°
3
70°
54°
4
66°
55°
5
57°
52°
6
52°
45°
7
55°
43°
8
61°
39°
9
66°
43°
10
64°
46°
11
50°
41°
12
54°
41°
13
52°
45°
14
50°
41°
15
55°
39°
16
55°
41°
17
59°
43°
18
61°
48°
19
61°
45°
20
66°
54°
21
70°
55°
22
77°
52°
23
84°
57°
24
77°
61°
25
81°
55°
26
86°
57°
27
N/A
28
72°
45°
29
85°
59°
30
78°
55°
31
73°
54°
1
73°
55°
2
74°
54°
3
69°
53°
4
70°
52°
5
69°
50°
6
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Arnsberg
Arnsberg's May 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 45° and 59°. The average high for May is 73° with an average low of 53°. 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 Arnsberg. See also: June | July | August.