July in Baton Rouge is the rainiest and the cloudiest month of the year. In July, the weather in Baton Rouge is typically hot. Average daily high temperature in July is about 32 degrees above zero. On average, Baton Rouge has 18 rainy, 7 sunny, 4 partly cloudy, and 2 cloudy days in July. The rains are usually heavy. July as well as June and August is considered the most uncomfortable time to visit Baton Rouge.