Qulin, Missouri is a small town located in Butler County in the southeastern part of the state. The climate in Qulin is characterized as humid subtropical, with hot and humid summers and mild winters. Summers often see temperatures reaching the mid-90s°F (mid-30s°C), while winters tend to be relatively mild, with average temperatures in the mid-40s°F (7-9°C).

The hydrology constituents of Qulin are mainly influenced by the nearby St. Francis River. This river runs along the western border of the town and provides recreational opportunities such as fishing, boating, and canoeing. The river is known for its diverse fish species, including largemouth bass, catfish, and sunfish.

In addition to the St. Francis River, Qulin is surrounded by natural beauty, offering plenty of outdoor recreation opportunities. The town is close to several conservation areas and state parks, including the Mark Twain National Forest, which provides hiking, camping, and wildlife watching opportunities. Other nearby attractions include Mingo National Wildlife Refuge, which offers birdwatching and hunting opportunities, and Lake Wappapello, which provides fishing, boating, and swimming opportunities.