January in Waterville is the most freezing month of the year. In January, the weather in Waterville is typically freezing. Average daily high temperature in January is about 4 degrees below zero. On average, Waterville has 13 partly cloudy, 9 sunny, 6 snowy, and 3 cloudy days in January. The snowfalls are usually heavy. January as well as September is considered the most comfortable time to visit Waterville.