While Western Canada returns to summer temperatures, the Canadian Arctic is already shifting into winter mode. A few wintery systems are building in the north that may move a polar air mass south during early September.

In the northwest, a pocket of cold air is settling over Nunavut. A trough, with strength rarely seen at this time of year, can be seen over the Canadian Arctic Archipelago, holding this cold air.

Compared to Alberta, British Columbia, and parts of the Northwest Territories, which continue to experience daytime highs of 30C through this weekend.

[Saturday Northern Canada Forecast] Saturday Northern Canada Forecast

TWO WINTERY SYSTEMS TO WATCH

Along this temperature contrast, several wintery systems are forecast through northern Canada.

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