Hydro Quebec crews worked through the night to fix power lines downed by fallen trees and snapped branches.
About 276,000 customers are still without electricity today — down from more than half-a-million on Friday.
The powerful wind and rain swept through Ontario and southwest Quebec.
A municipal employee in Boucherville, a suburb of Montreal, died when a branch fell in a local park.
Two other people were injured.
Eight children were injured in Prevost when a tent at a day camp came down on its occupants.
Areas around Laval, the Laurentians, Lanaudiere and the Outaouais region were hit hardest by the storm.