A cross-country low pressure system is in the works, and will track across most of Canada this week. While no major storms or disruptive weather will be the result, most of Canada will feel this low’s influence in terms of quickly falling temperatures. Signs of snow will also be on the doorstep, so don’t be surprised if you see the flakes show in your forecast.
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It starts in Alberta, where Sunday’s warm and sunny conditions were abruptly replaced with frigid daytime highs and the first signs of significant snow on Monday. For some southern regions that have basked in the recent 20-degree temperatures, this plunge to near the freezing mark will surely be a rude wake-up call to adjust to. Especially when coupled with snow, and changing travel conditions that haven’t be dealt with yet so far this season.
The cold front will be quite potent as it continues its trek across Canada, dropping temperatures in its wake.
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Southern Saskatchewan and Manitoba will both see the chilly plunge as soon as Tuesday, as Monday’s highs into the lower 20s will sit closer to just 10°C the next day.
For some areas, the drop will be even more significant, including Regina, Sask., where a daytime high of just 3°C is forecast for Tuesday.
The front will slowly track east into northwestern Ontario by Wednesday, with similar 20°C temperatures dropping to just single-digit highs for mid-week.
Southern sections of Ontario and Quebec will hold onto the spectacular fall conditions a little longer, but by Thursday, that 10-degree tumble will arrive, as well. It’ll likely feel much cooler, especially after the extended stretch of warm and well above seasonal ‘open window’ weather.
Another shot of chilly weather will spread across the region during the weekend, a far cry from the late summer-like conditions that had many return to shorts and t-shirts just this past weekend.
The final stop for this cross-country low will be in Atlantic Canada. After enjoying mostly sunny and warm conditions for the first half of the week, the cold front will cool things off right in time for the weekend.
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Forecasters are also keeping a close eye on Tropical Storm Oscar, which is expected to get absorbed into a non-tropical system over the Atlantic, and then track north towards Atlantic Canada late week. The exact track is still uncertain, but at this point, the most likely scenario appears to be a track into southeastern Newfoundland, with widespread windy conditions and heavy rain expected across most of Newfoundland and possibly eastern Nova Scotia through Friday.
Be sure to enjoy the warmth and sunshine while you have it this week, as the cross-Canada low and potent cold front will leave nearly no one spared from the looming cooldown.
