If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Cheboygan: The hottest months are usually July and August with an average temp of 64°F, while the coldest months are February and January with an average of 24°F. The snowiest months in Cheboygan are January, November, March, and February, with each month seeing an average of 16 inches of snowfall.