January in Silverstone is the coldest month of the year. In January, the weather in Silverstone is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Silverstone has 15 rainy, 6 sunny, 6 cloudy, and 4 partly cloudy days in January. The rains are usually moderate. January as well as February, March, June, and July is considered the most uncomfortable time to visit Silverstone.