Rainsville, Alabama is a small city located in DeKalb County in the northeastern part of the state. The climate in Rainsville is characterized as humid subtropical, with hot, humid summers and mild winters. Summers can be quite hot, with temperatures often reaching the upper 80s to mid-90s Fahrenheit, while winters are generally mild, with temperatures averaging in the low to mid-50s.

The hydrology constituents of Rainsville are primarily influenced by its location within the Appalachian Mountains. The area is known for its abundant rainfall, which contributes to the numerous streams and creeks that flow through the region. The Little River, a tributary of the Tennessee River, also runs nearby, offering opportunities for water activities such as fishing, kayaking, and canoeing.

Outdoor recreation enthusiasts in Rainsville can enjoy various activities in the surrounding natural areas. The nearby DeSoto State Park is known for its beautiful waterfalls, hiking trails, and camping facilities. Additionally, the Little River Canyon National Preserve is a popular destination for hiking, rock climbing, and birdwatching. Visitors to Rainsville can also explore the local parks and recreational areas, which offer amenities such as picnic areas, playgrounds, and sports fields.