Jean-Philippe Dion, 21, was climbing a mountainside with his friend when they were struck by lightning.
"His friend tried to revive him without any success so he just hurried to try and get help," said Sgt. Ann Mathieu, spokeswoman for the Sûreté du Québec.
The man's friend was able to contact authorities with his cellphone. He sustained minor injuries and reportedly suffered from shock.
Police have located the victim's body and retrieved it at around 7 a.m. ET on Thursday with the help of a helicopter.
François-Guy Thivierge, owner of a rock-climbing gym in Quebec City, said the rock-climbing community is reflecting on the incident.
"It's very sad news, spectacular news because it's very rare."
Police are investigating the incident.