Sumner, Mississippi is a small town located in the northern part of the state. The climate in Sumner is considered humid subtropical, characterized by hot and humid summers, mild winters, and abundant rainfall throughout the year. Summers can be quite hot, with temperatures often exceeding 90 degrees Fahrenheit, while winters are generally mild, with temperatures rarely dropping below freezing.

Hydrologically, Sumner is situated in the Mississippi Delta region, known for its fertile soil and numerous rivers and streams. The town is close to the Tallahatchie River, which offers opportunities for fishing, boating, and other water sports. Additionally, there are several lakes and reservoirs in the surrounding area that provide further recreational activities, such as swimming and picnicking.

Outdoor enthusiasts in Sumner can also explore the nearby Holly Springs National Forest, which offers a wide range of activities including hiking, camping, and wildlife viewing. The forest boasts scenic trails, picturesque lakes, and diverse flora and fauna, making it a popular destination for nature lovers.

Overall, Sumner, Mississippi offers a pleasant climate, abundant water resources, and various outdoor recreation opportunities for residents and visitors to enjoy.