Parts of Ontario could be slammed with over 100 cm of snow in coming days

A Clipper system arriving in Ontario on Wednesday night will mark the start of a major weather event that could leave some areas of the province buried in over a full metre of accumulated snow by late January.

As with forecasts from earlier in the week, there is a significant gap between the snowfall predicted by the American GFS (Global Forecast System) model commonly used in North America and the costlier but often more accurate ECMWF (European Center for Medium-Range Weather Forecast).

And according to the European model, a wide swathe of the province will be digging out from a colossal blanket of snow that could accumulate over several days, adding up to as much as 50 to 100 cm by January 25.

For all those having a hard time reading the map, included some cities 👇

Bookmark this for future reference!#OnWX #ONStorm https://t.co/3bEAastGEI pic.twitter.com/RcwlFwVw6Y

— WxOntario (@WxOntario1) January 14, 2026

Totals exceeding 100 cm could be recorded in locations including Niagara, Wiarton, and portions of Lake Ontario south of Kingston, stretching across the border into New York.

In Toronto, shifting forecasts are once again calling for a significant dump of snow, but deposits in the 15 cm range are nothing compared to what could descend on eastern Greater Toronto Area municipalities, with the European model forecasting snowfall exceeding 40 cm.

Some of the evening models are back to showing significant snowfall Wednesday PM into Friday from/ east of the #GTA and into Eastern #Ontario

Will continue watching future trends and update #OnWX #ONStorm pic.twitter.com/H0tS86RXEr

— WxOntario (@WxOntario1) January 13, 2026

The GFS model is also calling for a wallop of snow, with The Weather Network's 14-day forecast predicting as much as 24 cm to descend on Toronto over the same period.

Both models predict that Toronto could be in for some winter weather headaches, especially with the incoming snow's impact on roads coinciding with a planned TTC closure for this weekend.

Toronto's dump of snow will be accompanied by temperatures in the negative double digits, giving locals a rude awakening after an intense temperature swing that brought record-breaking heat in the teens to the city last week.