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
N/A
7
56°
39°
8
63°
43°
9
68°
47°
10
70°
49°
11
53°
38°
12
53°
39°
13
53°
41°
14
54°
42°
15
55°
44°
16
57°
45°
17
57°
45°
18
60°
48°
19
59°
46°
20
58°
45°
21
61°
52°
22
67°
49°
23
59°
46°
24
64°
51°
25
67°
54°
26
68°
55°
27
69°
56°
28
68°
54°
29
63°
52°
30
62°
55°
31
68°
56°
1
68°
56°
2
70°
57°
3
70°
56°
4
70°
57°
5
69°
56°
6
68°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Iserlohn
Iserlohn's May 2026 forecast shows daily high temperatures ranging from 53° to 70°, with overnight lows between 38° and 57°. The average high for May is 63° 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 Iserlohn. See also: June | July | August.
