Toronto residents are back to full power on Monday after three days of around-the-clock hydro repairs needed following a fierce wind and ice storm.

Toronto Hydro said the remaining homes and businesses that were without power on Sunday had the lights switched on early Monday morning.

But just as crews got caught up with the power situation and clearing downed trees, another weather system was threatening to create more problems.

High winds expected on Monday night meant hydro poles were at risk of being blown over.

"Much like what we did, our control room will continually monitor the weather," Toronto Hydro spokesperson Tanya Bruckmueller told CTV's MairiAnna Bachynsky.

"Our crews are hopefully getting some rest today as they've been put on alert to get prepared in case we're getting another hard-hit storm."

It took more than 40 repair crews several days to cut through fallen trees and debris to reconnect homes left without electricity after a storm of freezing rain and wind whipped through southern Ontario on Thursday night.

The utility said 80,000 customers were without power at the height of the outages.

Several thousand homes in the Toronto area were still without power over the weekend.

Outside the city, Hydro One reported only small pockets of power outages Monday morning.

With a report from CTV's MairiAnna Bachynsky