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After weeks of above seasonal winter temperatures, Ontario is set to experience coldest air of the season.

Coldest day of the season headed for GTA

Katie Jones
Digital Reporter

Monday, January 5, 2015, 4:15 PM - The trend of frigid cold in southern Ontario continues this week, culminating with subzero temperatures in the Greater Toronto Area on Wednesday.

Temperatures in the region are shaping up to dip as low as -20 with the wind chill -- the lowest of the season so far.

This week has already brought a list of winter weather woes to parts of Ontario due to a fresh blast of Arctic air.

RELATED: Messy weekend turns into a blisteringly cold week for Ontario

On Monday, snow squalls impacted the drive on several major routes throughout the day. Blistering wind chills in the minus double digits have gripped the province since last week.

While these conditions may come as a bit of a shock after a winter season of mainly above average temperatures thus far, Weather Network meteorologist Dr. Doug Gillham says this week's temperatures may serve as a bitter reminder.

"We are being visited by the ghost of winter past -- specifically last winter."

Environment Canada has issued a special weather statement warning of the "coldest air of the season" for southern Ontario.

According to Gillham, more cold air is on the way.

"Here in the Greater Toronto Area, accumulation is not that significant as we go through the week," says Gillham. "But keep an eye on Thursday night."

An incoming Alberta clipper will bring 2-5 cm of snow to the GTA Thursday evening. Combined with chilly wind gusts, the risk of blowing snow and limited visibility threatens to impact the morning commute on Friday.

WATCH BELOW: The science behind wind chill

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