If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Youngsville: The hottest months are usually July and June with an average temp of 70°F, while the coldest months are January and December with an average of 33°F. The snowiest months in Youngsville are March, January, December, and February, with each month seeing an average of 9 inches of snowfall.