January in Lille is the coldest month of the year. In January, the weather in Lille is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, Lille has 17 rainy, 7 cloudy, 5 sunny, and 2 partly cloudy days in January. The rains are usually moderate. January as well as February, March, November, and December is considered the most uncomfortable time to visit Lille.