It’s back! Snow set to fly in Eastern Canada this week

Welcome to autumn in Canada! A chance of snow is in the forecast for some parts of Eastern Canada over the next few days.

Cooler air pushing into the region will allow precipitation to change over to snow in some areas, bringing a few communities their first chance at accumulations this season.

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A cold front will move through Ontario, Quebec, and Atlantic Canada through the beginning of the workweek as an active storm track returns to the East.

The push of chilly air will allow rain to change over to snow for portions of Ontario and western Quebec on Sunday evening into Monday morning.

While there's still some discrepancy in computer model guidance, some areas north of Timmins can expect to see their first accumulations of the season.

Temperatures will briefly tumble with northwest flow behind the cold front on Monday and Tuesday. Readings are expected to come in 5-10 degrees below seasonal. A forecast high of 11°C in Ottawa would be the city's chilliest day since May 13.

Anticipate widespread frost and freeze conditions through early this upcoming week.

Farther east, a secondary low-pressure system off the East Coast will intensify over the region and bring widespread snowfall to Labrador through Tuesday.

Higher elevations across Labrador could see totals exceeding 30 cm. Larger communities will see much less, with a trace of snow in store for Labrador City and less than 5 cm for Churchill Falls.

Don't let all the talk about El Niño lull you into a false sense of security about snow chances across Canada in the months ahead. Even a season with above-seasonal temperatures is often plenty cold enough for snow to fall with the right setup in place.

An average season's first snowfall arrives in Kapuskasing around Oct. 2, followed by late-October farther south toward Ottawa, Montreal, and Moncton.