July in Culiacán is the rainiest and the cloudiest month of the year. In July, the weather in Culiacán is typically hot. Average daily high temperature in July is about 32 degrees above zero. On average, Culiacán has 24 rainy, 5 sunny, 1 cloudy, and 1 partly cloudy day in July. The rains are usually heavy. July as well as August and September is considered the most uncomfortable time to visit Culiacán.