It is set to get cold this week across the region.
Environment Canada updated their special weather statement today, and the cold air is moving in.
Fresh frigid Arctic air is arriving by tonight, with the coldest weather so far this season expected throughout the work week.
A frigid Arctic airmass will arrive tonight plunging Southern Ontario into a deep freeze for the upcoming work week.
Extreme cold warnings will likely be required at times during the week due to the combination of cold temperatures and brisk winds.
Temperatures will plunge to well below average values for early January.
Minimum temperatures of minus 20 or below on the coldest days are likely, except for locales right along the shorelines of the Great Lakes and across Southwestern Ontario where temperatures may bottom out in the minus 15 to minus 20 range.
Significant snow squalls will affect areas to the southeast of the Great Lakes at times.
Snow squall watches are in effect for these regions.
Meanwhile, remaining regions will see varying amounts of sun, cloud, with scattered flurries expected.
