In April, the weather in Riviere Du Loup is typically cold. Average daily high temperature in April is about 5 degrees above zero. On average, Riviere Du Loup has 12 cloudy, 11 rainy, 3 sunny, 3 partly cloudy, and 1 snowy day in April. The rains are usually heavy. April as well as January, May, October, and November is considered the most uncomfortable time to visit Riviere Du Loup.