It’s time to layer up as the Greater Toronto Area faces a frigid weekend forecast, according to Environment Canada. 

The national weather agency forecasts daytime highs in the minus double digits from Saturday to Monday and a “potential for significant snow on Sunday.”

“The coldest air of the season along with very cold wind chills is expected this weekend,” it said. 

An official weather warning has not been issued at this time. 

Here’s what you can expect in the days ahead:

• Friday: A chance of flurries with a high of -10 C and a low of -22 C.
• Saturday: Sunny with a high of -15 C and a low of -18 C.
• Sunday: Snow with a high of -9 C and a low of -12 C. 

With the wind chill factored in, Friday could feel more like -22, Saturday like -32 and Sunday like -28, said Colette Kennedy, CBC Toronto’s meteorologist.

“On Sunday, measurable snow and cold air, a dynamic duo,” she said on Wednesday. “Whether we like it or not, that’s what’s coming.”

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The freezing temperatures will be the “big story” of the weekend, said Environment Canada meteorologist Geoff Coulson to CBC Radio’s Metro Morning on Wednesday. 

“[We’re] looking at a morning wake-up temperature Saturday morning of -20 C,” he said.

Coulson warned residents to dress warmly and be prepared for the cold snap in the days ahead.

York Region issued a cold weather alert for people experiencing homelessness from Thursday to Sunday. It said on social media that anyone requiring emergency housing should call its intake phone number.

Meanwhile, five warming centres and two surge sites are open in the City of Toronto for anyone looking for a resting place or hot meal, according to the city’s website. 

Centres will be open 24 hours a day and welcome walk-ins, unless stated otherwise by staff or online, it says.