July in Los Mochis is the cloudiest month of the year. In July, the weather in Los Mochis is typically hot. Average daily high temperature in July is about 33 degrees above zero. On average, Los Mochis has 15 rainy, 7 sunny, 7 partly cloudy, and 2 cloudy days in July. The rains are usually heavy. July as well as August is considered the most uncomfortable time to visit Los Mochis.