January in Lexington is the windiest 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 9 rainy, 9 cloudy, 7 sunny, and 6 partly cloudy days in January. The rains are usually moderate. January as well as February, March, and December is considered the most uncomfortable time to visit Lexington.