After a reasonably warm, if snowy Thursday, an Arctic air mass is set to bring cold temperatures back to southern Ontario.
Thursday afternoon, snow, rain and freezing rain continued to fall in different parts of the province, with more snow expected later in the day as temperatures dropped.
Areas around Grey-Bruce and east through Muskoka toward Ottawa were forecast to see anywhere from 5 cm to 12 cm of snowfall in total, with areas to the south expected to fall at the lower end of that scale.
Later in the day Thursday, as snowfall stopped, temperatures were set to plunge – fuelled by brisk winds from the northwest, Environment Canada said.
Across Waterloo-Wellington, temperatures were forecast to -15 C overnight, rebounding only to -12 C on Friday – with wind chill values around -26.
Saturday is expected to be a warmer day, with a high of -5 C and chance of flurries – but forecast highs for Sunday and Monday are -13 C and -12 C respectively.
Perth County was forecast to see a 60 per cent chance of flurries overnight, with temperatures dropping to -15 C.
Friday was expected to bring with it a high of -12 C and harsh wind chill, followed by a warmup to -3 C on Saturday – before Sunday and Monday highs of -12 C and -11 C.
In Oxford-Brant, forecasts call for temperatures to drop to -11 C overnight and hold steady around -12 C on Friday.
Saturday and Sunday will bring the potential for flurries, with highs of -5 C and -11 C, and -11 C is also in the cards for Monday.
Snow squalls were expected to continue overnight in Huron County, with blowing snow also a concern.
Friday, temperatures were forecast to rise to -10 C, followed by highs of -3 C and -12 C on Saturday and Sunday.
Grey-Bruce was said to be at risk of freezing drizzle early Thursday evening and blowing snow in localized areas through the night, with flurries falling early Friday morning.
Temperatures were expected to hover around -12 C on Friday, with a wind chill around -26, followed by highs of -5 C and -15 C on Saturday and Sunday.
