Located in northeastern Mississippi, Rienzi is a small town with a warm and temperate climate. Summers are hot with average temperatures ranging from the mid-80s to the low 90s Fahrenheit, while winters are mild, with temperatures averaging in the 40s and 50s. The area experiences moderate rainfall throughout the year.

Rienzi sits within the hydrological basin of the Hatchie River, contributing to the hydrology of the region. The Hatchie River is a vital waterway, supporting a diverse aquatic ecosystem and providing recreational opportunities for fishing, boating, and wildlife observation. Additionally, numerous creeks and small lakes dot the landscape, further enhancing the hydrological features of Rienzi and its surrounding areas.

Outdoor recreation enthusiasts will find ample opportunities in Rienzi. The town is surrounded by picturesque natural landscapes, including forests, rolling hills, and open fields. Residents and visitors can enjoy activities such as hiking, camping, birdwatching, and hunting. The nearby Tishomingo State Park offers even more outdoor recreation options, including trails, swimming, fishing, and rock climbing. With its pleasant climate, diverse hydrology, and abundant outdoor activities, Rienzi is a haven for nature lovers and outdoor adventurers.