A frost advisory is in effect for the city of Toronto tonight, although areas closer to Lake Ontario can expect milder conditions.

Temperatures in Toronto are expected to hit 4 C tonight, but could feel as cold as 1 C.

The frost could damage plants in frost-prone areas, according to Environment Canada, which has advised Torontonians to cover up their plants.

Frost warnings are also in effect for Mississauga, Barrie, Brampton, Burlington, Guelph, Vaughan, Oshawa and Whitby.