If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Magog: The hottest months are usually July and August with an average temp of 63°F, while the coldest months are January and February with an average of 21°F. The snowiest months in Magog are December, January, February, and November, with each month seeing an average of 12 inches of snowfall.