Toronto is under a snowfall warning and between 15 to 20 centimetres of the white stuff is expected on Sunday.

"For those dreaming of a white Christmas, you will get your wish," Environment Canada said in the warning issued at 5:46 a.m. ET.

Snow is expected to fall in the Greater Toronto Area starting late Sunday afternoon. It will become heavy at times on Sunday evening. Environment Canada is predicting between 15 to 20 centimetres will fall before it tapers off overnight.

In its warning, the federal weather agency said the snow could limit visibility, making travel challenging. 

As for Christmas Day, cold brisk winds are in the forecast and that wind could create some blowing snow in areas.

Environment Canada said people who intend to travel on Christmas Day may want to adjust their plans according to the weather if possible.

A low pressure system from Texas is reportedly gathering strength on Sunday morning and Environment Canada said it will "race" towards the Greater Toronto Area on Sunday. 

Toronto snow winter cold alert 2017

In its snowfall warning for Toronto, Environment Canada says the snow could limit visibility and make travel challenging. (David Donnelly/CBC)