August in Perkinston is the hottest month of the year. In August, the weather in Perkinston is typically hot. Average daily high temperature in August is about 32 degrees above zero. On average, Perkinston has 18 rainy, 8 sunny, and 5 partly cloudy days in August. The rains are usually heavy. August as well as June and July is considered the most uncomfortable time to visit Perkinston.