U.S. 441 leads to the park. No train or bus service accesses the park. 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 bring 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 the driest period. Frosts occur starting in late September. Winter is generally moderate, but extreme conditions occur with increasing elevation.