January in Kostroma is the most freezing month of the year. In January, the weather in Kostroma is typically freezing. Average daily high temperature in January is about 9 degrees below zero. On average, Kostroma has 17 cloudy, 12 snowy, and 2 sunny days in January. The snowfalls are usually light. January as well as April, October, and November is considered the most uncomfortable time to visit Kostroma.