 According to the United States Census Bureau, the borough has a total area of , all of it land.Nazareth's climate is similar to the rest of the Lehigh Valley, with four distinct seasons, humid summers, cold winters, and very short and mild springs and falls.Nazareth's topography can best be described as hilly, as the town itself sits atop a local outcropping underground of one of the richest veins of limestone in the U.S. Much of the farmland surrounding Nazareth is being converted into close sitting lots of suburban housing, for predominantly commuter households.