So last saturday I was down in Pickens, SC visiting my wifes parents. Elevation is around 1090 feet. By 4:30 in the afternoon the temperature was 92 degrees. I live in Lake Glenville NC which is about 45 minutes away. When we got back to the top of the mountain at 3510, the temperature was 74 degrees. I was amazed at the big swing in temperatures. This what makes lake glenville a desirable lake to vacation on because it's the highest lake east of the mississippi.