September in Freehold is the sunniest month of the year. In September, the weather in Freehold is typically warm. Average daily high temperature in September is about 23 degrees above zero. On average, Freehold has 15 sunny, 8 rainy, and 7 partly cloudy days in September. The rains are usually moderate. September as well as August is considered the most comfortable time to visit Freehold.