January in Kopeysk is the most freezing month of the year. In January, the weather in Kopeysk is typically freezing. Average daily high temperature in January is about 13 degrees below zero. On average, Kopeysk has 21 cloudy, 4 sunny, 3 snowy, and 3 partly cloudy days in January. The snowfalls are usually light. January as well as February, April, October, and December is considered the most uncomfortable time to visit Kopeysk.