If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Jeffersonville: The hottest months are usually July and August with an average temp of 64°F, while the coldest months are January and February with an average of 22°F. The snowiest months in Jeffersonville are January, March, November, and April, with each month seeing an average of 23 inches of snowfall.