Rain and wet snow are sweeping through parts of Atlantic Canada, Ontario and Quebec, where Hydro-Québec reports more than 28,000 customers are without power.
The winter may have been mild in Ontario, but it's going out strong, with snow in some areas and wind and rain in many others.
Ottawa-area residents woke up to strong winds, ice pellets and some flurries Monday morning, as the temperature hovered around 0 C. By midday, the ice and snow had turned to rain in many areas, but Environment Canada cautioned that rain mixed with wet snow could return overnight.
Southern Ontario was also dealing with a wet and windy morning, CBC weather specialist Jay Scotland said.
"I was in flip-flops a week ago and now I had to pull out the boots. Not happy," Toronto resident Ally Mixemong said.
Snow accumulation isn't expected in the Toronto area, but the snow could stick around in areas north of the Haliburton Highlands or along the escarpment, he said.
But the cold weather isn't covering the whole province - in Thunder Bay, it was mainly sunny and 14 C.
The wet, blustery weather conditions led to power outages in many parts of Quebec, but 165 crews were out trying to deal with the outages, Hydro-Québec said Monday afternoon.