July in East Windsor is the hottest month of the year. In July, the weather in East Windsor is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, East Windsor has 12 rainy, 8 sunny, 8 partly cloudy, and 3 cloudy days in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit East Windsor.