After what has been a relatively mild winter so far, Toronto's forecast shows that the city could experience its coldest weather of the season next week.
According to The Weather Network, temperatures could dive to -10 C this week, which would be a first this season.
Toronto and the GTA can expect to see some light flurries and precipitation throughout the coming days.
The colder, subzero weather will begin on the weekend and into next week, says TWN.
The milder weather Ontario has experienced thus far can apparently be attributed to a lack of arctic air.
However, a major system is about to push frigid air from the west coast across the prairies and into Ontario.
A polar vortex is also making its way to various parts of the country and is expected to take hold in the final week of January.
This weather event will bring up to 20 centimetres of snow to several regions in Ontario.