Dahlgren, Illinois is a small rural community located in Hamilton County. The climate in Dahlgren is typical of the Midwest, with hot summers and cold winters. The hydrology constituents in the area are mainly made up of the Little Wabash River and its tributaries, which provide opportunities for fishing and water recreation. Outdoor recreation opportunities in the area include hunting, hiking, and camping in the nearby Shawnee National Forest. The forest offers over 280,000 acres of wilderness, with numerous trails for hiking, biking, and horseback riding. Overall, Dahlgren is a great destination for outdoor enthusiasts looking to explore the natural beauty of southern Illinois.