August in The Valley is the rainiest month of the year. In August, the weather in The Valley is typically hot. Average daily high temperature in August is about 28 degrees above zero. On average, The Valley has 21 rainy, 6 sunny, 3 cloudy, and 1 partly cloudy day in August. The rains are usually heavy. August as well as May, June, July, and September is considered the most uncomfortable time to visit The Valley.