January in Saint Clairsville is the snowiest, the cloudiest, and the coldest month of the year. In January, the weather in Saint Clairsville is typically freezing. Average daily high temperature in January is about zero. On average, Saint Clairsville has 14 cloudy, 7 snowy, 5 rainy, 3 sunny, and 2 partly cloudy days in January. The snowfalls are usually moderate. January as well as February, March, and December is considered the most uncomfortable time to visit Saint Clairsville.