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Results: La Niña and the polar vortex set to deliver a truly Canadian winter
Published on 11/28/2025
Canada is in for a colder-than-usual start to winter as Arctic air moves south and a disrupted polar vortex sets the stage for steady cold through December and into 2026. The return of a stronger La Niña will reinforce this pattern, promising a classic, snowy Canadian winter after an unusually mild fall.
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