Polar Vortex January 2025 Forecast. It shows a weak polar vortex that will break off into multiple vortices, one of which may reach northern. By the end of january, we expect that much of western canada will be colder than normal, while temperatures will be near seasonal or above seasonal from southern ontario to.

Early data shows that the polar vortex is likely to be weaker than normal in the winter of 2024/2025. Forecasted surface temperature anomalies (°c;