In October, the weather in Rayakoski is typically cold. Average daily high temperature in October is about 3 degrees above zero. On average, Rayakoski has 15 cloudy, 7 rainy, 4 sunny, 4 partly cloudy, and 1 snowy day in October. The rains are usually moderate. October as well as January, February, April, and May is considered the most uncomfortable time to visit Rayakoski.