January in Scunthorpe is the coldest month of the year. In January, the weather in Scunthorpe is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Scunthorpe has 18 rainy, 7 cloudy, 4 sunny, and 2 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 Scunthorpe.