Freezing rain extended into Friday morning in Ontario, triggering power outages throughout the province, the Canadian Broadcasting Corp. reported.
In Hamilton, about 4,000 customers were without power during the storm and 5,600 more in Toronto lost power.
Power was restored to the Toronto residents at about 8:30 a.m. Friday.
About 50 flights at Toronto's Pearson airport were canceled Thursday due to the storm, officials said.
Tree limbs and power lines were reported down in Guelph, Ontario.
In Montreal, meteorologists predicted 5.5 to 7 inches of snow, CBC News said. Lesser amounts were predicted for Quebec City.
Snowfall warnings were also issued for New Brunswick and northern Nova Scotia, which was under a winter storm watch. Meteorologist said the province could be hit with freezing rain, ice pellets and snow Friday evening.