January in Riabyna is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Riabyna is typically freezing. Average daily high temperature in January is about 2 degrees below zero. On average, Riabyna has 18 cloudy, 5 snowy, 4 partly cloudy, 2 rainy, and 2 sunny days in January. The snowfalls are usually light.