If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Berrien Springs: The hottest months are usually July and August with an average temp of 69°F, while the coldest months are January and February with an average of 31°F. The snowiest months in Berrien Springs are January, November, February, and October, with each month seeing an average of 10 inches of snowfall.