If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Longville: The hottest months are usually July and August with an average temp of 65°F, while the coldest months are January and February with an average of 17°F. The snowiest months in Longville are March, December, January, and February, with each month seeing an average of 8 inches of snowfall.