You can plan your beach trip with a look at year-round temperatures in Saint-Joseph-de-la-Rive: The hottest months are usually July and August with an average temp of 60°F, while the coldest months are January and February with an average of 16°F. The snowiest months in Saint-Joseph-de-la-Rive are January, February, March, and April, with each month seeing an average of 33 inches of snowfall.