August in Wharton is the sunniest and the hottest month of the year. In August, the weather in Wharton is typically hot. Average daily high temperature in August is about 35 degrees above zero. On average, Wharton has 13 sunny, 11 rainy, 6 partly cloudy, and 1 cloudy day in August. The rains are usually heavy. August as well as June, July, and September is considered the most uncomfortable time to visit Wharton.