August in Clovis is the rainiest month of the year. In August, the weather in Clovis is typically hot. Average daily high temperature in August is about 31 degrees above zero. On average, Clovis has 17 sunny, 8 rainy, and 6 partly cloudy days in August. The rains are usually moderate. August as well as January, June, July, and December is considered the most uncomfortable time to visit Clovis.