Great Smoky Mountains National Park Weather & Climate: Best Time to Visit

In Great Smoky Mountains National Park, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 25°C (77°F) in August to a chilly 6°C (43°F) in the coolest month, January.

Nights vary from 13°C (55°F) in August to around -6°C (21°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Great Smoky Mountains National Park experiences significant rain/snowfall throughout the year, averaging 1875 mm (74 in) of precipitation annually. Great Smoky Mountains National Park offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month July (211 mm (8.3 in)) and the driest month February (120 mm (4.7 in)) is not too significant. For more details, please visit our Great Smoky Mountains National Park Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

For those who appreciate different seasons, Great Smoky Mountains National Park serves as an ideal destination. Expect longer, more sun-filled days in June with an average of 9.7 hours of sunshine daily, and embrace the darker days in December, offering only 4.2 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Great Smoky Mountains National Park.

The city experiences its highest humidity in July, reaching 76%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year