Expect dangerous travel into Monday after historic GTA snow

A record-breaking winter storm hit southern Ontario on Sunday, producing 30-40+ cm across parts of the region

A memorable winter storm moving across North America broke records in southern Ontario on Sunday after walloping the most populous region in the country with intense snows.

Toronto-Pearson Airport saw 42 cm of snow as of 8:00 p.m. Sunday, breaking the record for the most snow ever recorded at the station in a single day. Records at the airport began in 1938.

PHOTOS: Toronto's snowiest day on record, 30-40+ cm reported

Ontario snowfall reports 8pm Sunday January 25 2026

Sunday’s all-time record beats out the previous snowiest day on Feb. 25, 1965, which saw 39.9 cm of snow pile up at the airport.

The Greater Toronto Area’s very heavy accumulations resulted from a band of lake-effect snow that developed within the larger snowstorm itself. This enhancement greatly intensified snowfall rates across the region, allowing for steep totals in just a few hours.

Expect snowfall to taper off through the overnight hours across southwestern Ontario and the Greater Toronto Area, lingering into early Monday morning for folks in eastern portions of the province.

Ontario temperatures Monday morning

Despite the storm moving off toward Atlantic Canada, significant travel issues and widespread closures will continue into Monday morning. Road closures, lane restrictions, flight cancellations, and school closures will be commonplace to start the new workweek.

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Temperatures will remain very cold behind this system. Daytime high temperatures in the city of Toronto may not rise above -10°C for the next seven days, which is an unusual feat for this part of the country.

Stay with The Weather Network for all the latest on conditions across Ontario.

WATCH: Record-breaking snowfall hits Ontario during historic storm