November in Iserlohn is the cloudiest month of the year. In November, the weather in Iserlohn is typically cold. Average daily high temperature in November is about 8 degrees above zero. On average, Iserlohn has 14 rainy, 8 cloudy, 7 partly cloudy, and 1 sunny day in November. The rains are usually heavy. November as well as January, February, March, and April is considered the most uncomfortable time to visit Iserlohn.