You might want to bundle up on Friday morning especially if you live north, and north-west of the city, and all the way through Barrie and into Collingwood.

Environment Canada has issued a frost warning thanks to cooler air that was ushered in on Thursday night, which means you might be waking up to a thermometer reading near zero.

The actual formation of frost on your windshield, is unlikely, but the impacts on tender plants will be seen.

Farther north, police have issued a road advisory to motorists, between Thunder Bay and Marathon, because of snow and black ice.

(w files from E. Macko)