The North Carolina Symphony Summerfest delayed its start time at KokaBooth Amphitheatre in Cary.
The steamy evening weather hit a sour note with organizers, as they moved the performance back a half hour to 8 p.m. while temperatures dipped.
"We usually do a picnic dinner here every Saturday night, but this week and last week, we went out for dinner and then came here," said Cary resident Cecile Paiva. "It's a little cooler when you come a little later."
The mid-afternoon heat proved to be oppressive for attendees of the Festival for the Eno, also held Saturday.
"It's the hottest day in my life," said festival-goer Ging-Ging Lee.
Organizers placed a misting tent to provide some relief but encouraged attendees to take advantage of the Eno River.
"You get in there. You can splash around," said Festival for the Eno Organizer Greg Bell. "I think it is a nice 60 degrees."
One person was treated for heat-related issues at the Festival for Eno which continues Sunday .
Sunday's forecast calls for 101 degrees by midday in the ABC 11 Eyewitness News viewing area, but a break from the heat will come, as temperatures dip to the low 80s by Wednesday.