Environment Canada has issued a winter weather travel advisory for Sunday evening, Sunday night and Monday.
The advisory is for Toronto, Pickering, Oshawa, Southern Durham Region, Vaughan, Richmond Hill and Markham.
The agency says local amounts of 5 cm are possible Sunday night, and again Monday.
Roads may quickly become icy and visibilities are expected to be reduced at times in the bands.
A more widespread area of snow is expected to arrive during the afternoon commute Monday.