Windsor-Essex and Chatham-Kent are under freezing rain warnings. Between two and five millimetres of freezing rain are expected.
The agency said a brief period of snow could be expected following the freezing rain, but not enough for significant accumulation.
The freezing rain will also hit the Montérégie region by midday Sunday before making its way to the Outaouais and Mauricie regions by the evening.
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Once that date passes, as it did for Cousins and the Redskins the last two years, players are stuck on a one-year deal. However, nothing will be too important until the actual free agency period gets rolling in March.
Nonetheless, Environment Canada's statement warns of icy conditions outdoors throughout the day, and advises drivers to slow down when on the road in slippery conditions.
"There will be a lull in the precipitation for much of the night before yet another disturbance moves into the area early Sunday morning", says the national weather service. "Watch for tail lights ahead and maintain a safe following distance".
Freezing rain will add an icy sheen to Toronto's rooftops, roadways, and sidewalks over the course of Sunday. "Poor weather conditions may contribute to transportation delays".