Lowest visitation occurs in winter months, November to February, and early spring. The park is open year-round, with two of the three visitor centers open all year, except on Christmas. Temperatures are 10 to 20 degrees cooler on the mountaintops. Annual precipitation averages 65 inches in the lowlands to 88 inches in the high country. Spring often brings unpredictable weather, particularly in higher elevations.
Summer is hot and humid, but more pleasant in higher elevations.
Fall has warm days and cool nights and is also the driest period. Frosts occur starting in late September. Winter is generally moderate, but extreme conditions occur with increasing elevation. Directions Several major highways lead to Great Smoky Mountain National Park. The following routes provide access to the three main entrances.