S
M
T
W
T
F
S
29
46°
37°
30
48°
40°
1
43°
41°
2
46°
41°
3
47°
40°
4
47°
41°
5
46°
40°
6
46°
39°
7
45°
34°
8
43°
30°
9
39°
30°
10
36°
31°
11
36°
35°
12
39°
38°
13
40°
37°
14
41°
36°
15
39°
39°
16
46°
40°
17
47°
41°
18
46°
40°
19
46°
40°
20
47°
38°
21
46°
36°
22
42°
36°
23
39°
37°
24
39°
36°
25
40°
34°
26
39°
30°
27
38°
29°
28
36°
28°
29
35°
29°
30
36°
32°
31
35°
35°
1
41°
36°
2
41°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Iserlohn
Iserlohn's December 2026 forecast shows daily high temperatures ranging from 35° to 48°, with overnight lows between 28° and 41°. The average high for December is 42° with an average low of 36°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Iserlohn. See also: January | February | March.
