July weather forecast in Princeton

July in Princeton is the sunniest month of the year. In July, the weather in Princeton is typically warm. Average daily high temperature in July is about 21 degrees above zero. On average, Princeton has 16 sunny, 7 rainy, 6 partly cloudy, and 2 cloudy days in July. The rains are usually light. July as well as August is considered the most comfortable time to visit Princeton.