If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Watkins Glen: The hottest months are usually July and August with an average temp of 67°F, while the coldest months are January and February with an average of 29°F. The snowiest months in Watkins Glen are January, March, December, and February, with each month seeing an average of 7 inches of snowfall.