A snowfall warning is in effect for Toronto, as well as parts of Halton and Peel regions, calling for yet another dumping of snow on Wednesday.

A low-pressure system from the U.S. Midwest will move through the area, with snow expected to start in the morning.

Environment Canada says between 10 and 15 centimetres could fall on parts of southern Ontario on Wednesday, with higher amounts possible along the shores of Lake Ontario and Lake Erie.

Driving conditions are expected to deteriorate Wednesday morning, the agency said, but the afternoon commute will be hardest hit.

"Most of the snow is expected to fall during Wednesday's afternoon commute. If you can, please consider leaving your car at home Wednesday morning and take public transit," said Toronto city spokesperson Eric Holmes in an email.

The city is asking people to give snow-clearing equipment time and space. People should also wait "several hours" after the snow has stopped falling to contact 311 with snow clearing requests, Holmes said.

The city says there's still money in the $90-million snow-clearing budget to handle the weather, and that snow-clearing contracts are "very flexible this year."

The snowfall comes amid a bit of a deep freeze in the city. While Toronto's medical officer of health cancelled an extreme cold warning at noon on Tuesday, temperatures were still frigid.

As of 3 p.m., the temperature in the city was –8 C, but felt more like –16 with the wind.

The overnight low is forecast to drop to –12 C, but will feel more like –15.