January in Lexington is the snowiest and the coldest month of the year. In January, the weather in Lexington is typically cold. Average daily high temperature in January is about 3 degrees above zero. On average, Lexington has 15 partly cloudy, 10 sunny, 4 rainy, 1 snowy, and 1 cloudy day in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Lexington.