The Weather Network predicts significant lake-effect snow events for southern Ontario that will greatly affect commutes throughout the day.

A trough in an incoming weather system will bring flurries to the GTA in the morning and heavier snow around the western end of Lake Ontario. 10 to 15 cm of snow is expected to fall in the stretch between Hamilton to St. Catharines along the QEW, while areas west of Toronto and the GTA could see anywhere from 5 to 10 cm of snow.

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The Weather Network gives a breakdown of the weather you can expect for this Monday and Tuesday:


Southwestern Ontario will be hit with a curtain of snow in the morning that will gradually move east and reach the GTA by the afternoon. Snowfall will increase with the lake-enhancement from the western shores of Lake Ontario, affecting afternoon and evening commutes.

“While this is not a major storm, the flakes will be very fluffy and will pile up rather quickly,” says meteorologist Dr. Doug Gilliam. “Fortunately this kind of snow is easy to shovel.”

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The snow will have passed by Tuesday morning, but temperatures will begin to dip below seasonal. After a short climb above 0 C on Wednesday, cold Arctic air will arrive in southern Ontario by late Thursday.

“A clipper system will develop along the cold front, but the track of the system is still uncertain. Currently, we have very little snow in the forecast, but we are watching the potential for a period of snow Thursday night and Friday behind the cold front,” reports Gillham.

Please stay tuned for more weather updates throughout the day.