The mountains have avoided the triple-digit heat index all week, and the lower temperatures are keeping hotels booked and restaurants full.
WATCH: Meteorologist Katie Virtue Explains Heat Index
Denise Broaerman said she came to Grandfather Mountain from her home in Morganton with her grandchildren for one reason: to escape the heat.
"It (was) 70 when we came up and it's in the 90s down below," she said.
Broaerman wasn't alone on the mountainside Friday, where workers keep close track of the weather and its impact on attendance.
"It was a beautiful day and it was hot, and we were 273 percent ahead of the previous year," said Harris Prevost with Grandfather Mountain.
Miles away, in Blowing Rock, the hot weather off the mountain has been good for business at the Blowing Rock Market.
"They talk about the heat difference, for sure," Jordan Conner said. "We had some folks here from Charlotte and South Carolina, and they say it's incredible, the heat difference."