January weather forecast in Sumy

January in Sumy is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Sumy is typically freezing. Average daily high temperature in January is about 6 degrees below zero. On average, Sumy has 18 cloudy, 8 snowy, 4 partly cloudy, and 1 sunny day in January. The snowfalls are usually light. January as well as March, April, October, and November is considered the most uncomfortable time to visit Sumy.