July in Banbury is the rainiest and the warmest month of the year. In July, the weather in Banbury is typically warm. Average daily high temperature in July is about 19 degrees above zero. On average, Banbury has 21 rainy, 5 sunny, 3 cloudy, and 2 partly cloudy days in July. The rains are usually moderate. July as well as January, February, March, and April is considered the most uncomfortable time to visit Banbury.