If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Catskill: The hottest months are usually July and August with an average temp of 68°F, while the coldest months are January and February with an average of 29°F. The snowiest months in Catskill are January, March, December, and November, with each month seeing an average of 7 inches of snowfall.