Mammoth-Cave-Nat Weather Forecast

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Last Updated: December 22, 2025

Mammoth Cave National Park, located in Kentucky, is an extraordinary natural wonder known for its vast underground cave system.


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Summary

In terms of climate, the park experiences a humid subtropical climate with hot summers and mild winters. Average temperatures range from around 35°F (-2°C) in winter to 85°F (29°C) in summer. Rainfall is evenly distributed throughout the year.

Hydrologically, Mammoth Cave National Park is home to the Green River, which flows through the park's heart. The river provides an excellent opportunity for water activities such as kayaking, canoeing, and fishing. Many smaller streams, springs, and sinkholes can also be found within the park, contributing to its unique hydrological environment.

Outdoor recreation enthusiasts will find a plethora of activities to enjoy in Mammoth Cave National Park. The park offers over 80 miles of hiking trails, ranging from easy strolls to challenging hikes. Exploring the cave system is a popular activity, with guided tours available to visitors. Additionally, camping, horseback riding, wildlife viewing, and birdwatching are among the many activities that can be enjoyed in this picturesque national park.

       

Weather Forecast

Mammoth-Cave-Nat receives approximately 1320mm of rain per year, with humidity levels near 83% and air temperatures averaging around 14°C. Mammoth-Cave-Nat has a plant hardyness factor of 6, meaning plants and agriculture in this region thrive during a short period during spring and early summer. Most plants will die off during the colder winter months.