January in Blois is the coldest month of the year. In January, the weather in Blois is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Blois has 10 rainy, 9 cloudy, 7 partly cloudy, and 5 sunny days in January. The rains are usually light. January as well as February, March, November, and December is considered the most uncomfortable time to visit Blois.