January in Sylva is the snowiest and the most freezing month of the year. In January, the weather in Sylva is typically freezing. Average daily high temperature in January is about 11 degrees below zero. On average, Sylva has 13 cloudy, 12 snowy, 3 sunny, and 3 partly cloudy days in January. The snowfalls are usually light. January as well as February, April, September, and October is considered the most uncomfortable time to visit Sylva.