January in Kotlas is the most freezing month of the year. In January, the weather in Kotlas is typically freezing. Average daily high temperature in January is about 11 degrees below zero. On average, Kotlas has 15 snowy, 14 cloudy, and 2 sunny days in January. The snowfalls are usually light. January as well as February, April, September, and October is considered the most uncomfortable time to visit Kotlas.