July weather forecast in Plymouth

July in Plymouth is the sunniest and the warmest month of the year. In July, the weather in Plymouth is typically warm. Average daily high temperature in July is about 27 degrees above zero. On average, Plymouth has 16 sunny, 10 partly cloudy, and 5 rainy days in July. The rains are usually light. July as well as August and September is considered the most comfortable time to visit Plymouth.