July in Rimouski is the sunniest and the warmest month of the year. In July, the weather in Rimouski is typically warm. Average daily high temperature in July is about 22 degrees above zero. On average, Rimouski has 14 partly cloudy, 11 sunny, 5 rainy, and 1 cloudy day in July. The rains are usually light. July as well as August is considered the most comfortable time to visit Rimouski.