Delaware is one of five Middle Atlantic States in the United States of America. It is also the second-smallest state in the US. Delaware is bounded to the north by Pennsylvania, to the east by the Delaware River, New Jersey and the Atlantic Ocean and to the west and south by Maryland. Small portions of the state are also situated on the far, or eastern, side of the Delaware River Estuary, and these small parcels share land boundaries with New Jersey.
Delaware is on a level plain, the highest elevation not even rising 450 feet above sea level. The northern part is associated with the Appalachian Piedmont and is full of hills with rolling surfaces. South of Newark and Wilmington, the state follows the Atlantic Coastal Plain with flat, sandy, and, in some parts, swampy ground.
Since the majority of Delaware is a part of the Atlantic Coastal Plain, the climate is moderated by the effects of the ocean. The state is somewhat of a transistional zone between a humid subtropical climate and a continental climate. The southern portion of the State has a somewhat milder climate and a longer growing season than the northern portion of the State. All parts of Delaware have relatively hot, humid summers.