The climate in the park is subarctic, with long, cold winters and short, cool summers. Hydrology constituents include numerous rivers, lakes, and glaciers, with the park's largest glacier being the Kahiltna Glacier. Outdoor recreation opportunities include hiking, camping, mountaineering, and wildlife viewing. Visitors can take guided park tours, or explore the park's backcountry on their own. The park is home to many unique species, including Dall sheep, caribou, and grizzly bears. Despite its remote location, Denali National Park is a popular tourist destination, attracting over 600,000 visitors annually.
Denali-National receives approximately mm of rain per year, with humidity levels near 72% and air temperatures averaging around °C. Denali-National has a plant hardyness factor of , 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.