July in Scunthorpe is the warmest month of the year. In July, the weather in Scunthorpe is typically warm. Average daily high temperature in July is about 19 degrees above zero. On average, Scunthorpe has 20 rainy, 5 sunny, 4 cloudy, and 2 partly cloudy days in July. The rains are usually moderate. July as well as January, February, March, and June is considered the most uncomfortable time to visit Scunthorpe.