August in Ferriday is the rainiest month of the year. In August, the weather in Ferriday is typically hot. Average daily high temperature in August is about 32 degrees above zero. On average, Ferriday has 17 rainy, 9 sunny, 4 partly cloudy, and 1 cloudy day in August. The rains are usually heavy. August as well as July and December is considered the most uncomfortable time to visit Ferriday.