If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Tunkhannock: 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 30°F. The snowiest months in Tunkhannock are January, February, December, and March, with each month seeing an average of 5 inches of snowfall.