Cherokee, NC forecast. Elevations in the park range from approximately 875 feet to 6,643 feet and the topography can drastically affect local weather. Temperatures can vary 10-20 degrees Fahrenheit from mountain base to top, and clear skies lower down do not guarantee equally pleasant weather at higher elevations. Rainfall averages 55 inches per year in the lowlands to 85 inches per year at Clingmans Dome.