If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Chittenden: 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 23°F. The snowiest months in Chittenden are January, March, November, and December, with each month seeing an average of 13 inches of snowfall.