January in Rostov-na-Donu is the snowiest and the most freezing month of the year. In January, the weather in Rostov-na-Donu is typically freezing. Average daily high temperature in January is about zero. On average, Rostov-na-Donu has 17 cloudy, 5 partly cloudy, 3 rainy, 3 snowy, and 3 sunny days in January. The rains are usually light. January as well as February, March, November, and December is considered the most uncomfortable time to visit Rostov-na-Donu.