January in Clinton is the snowiest and the coldest month of the year. In January, the weather in Clinton is typically cold. Average daily high temperature in January is about 1 degree above zero. On average, Clinton has 14 partly cloudy, 8 sunny, 6 rainy, 2 cloudy, and 1 snowy day in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Clinton.