Freezing rain could impact several parts of the GTHA on Tuesday morning, says Environment Canada

People walk in freezing rain in Mississauga, Sunday. Dec. 28, 2025.

Environment Canada is warning of freezing rain that could impact several communities in the Greater Toronto and Hamilton Area on Tuesday morning.

Late Monday afternoon, Environment Canada issued a yellow warning for Burlington-Oakville, Caledon, the City of Hamilton, Halton Hills-Milton, and Mississauga-Brampton, advising of several hours of freezing rain, with 1 to 2 mm of possible build up.

A special weather statement is also in effect for the City of Toronto, Newmarket-Georgina-Northern York Region, Niagara Falls-Welland-Southern Niagara Region, Pickering-Oshawa-Southern Durham Region, St. Catharines-Grimsby-Northern Niagara Region, Uxbridge-Beaverton-Northern Durham Region, and Vaughan-Richmond Hill-Markham.

These areas could “possibly” see similar conditions.

In all cases, the freezing rain is expected to begin on Tuesday morning and end by the afternoon.

In some areas, freezing rain, which may be mixed with snow or ice pellets at times, will change over to rain as temperatures rise above the freezing mark. In others, it may change over to all snow as an area of low pressure moves through the region.

The national weather agency said areas along the Lake Ontario and Huron shorelines may see very little ice accretion or build up.

People are being advised that roads and walkways will likely become icy and slippery and that icy surfaces could be difficult to detect.

“There is risk of injury due to slips and falls. Be very careful if walking or driving,” Environment Canada said.

Local utility outages are also possible.