De-Kalb, Texas experiences a humid subtropical climate with hot summers and mild winters. The town is located near several bodies of water, including the Sulphur River and Wright Patman Lake, which offer opportunities for fishing, boating, and other water-based activities. The hydrology constituents of the area include the Sulphur River Basin, which is home to various species of fish and wildlife. Outdoor enthusiasts can also explore the nearby Atlanta State Park, which features hiking trails, campsites, and picnic areas. Additionally, visitors can enjoy local events such as the De Kalb Rodeo and the Christmas parade.