Winter Snow Forecast 2024 2024 Map. With the summer solstice behind us, we’re slowly inching toward winter here in the northern hemisphere. Early data shows that the polar vortex is likely to be weaker than normal in the winter of 2024/2025.

For some storms, that estimate is highly predictive. A look at the very latest winter 2024/2025 forecast data shows the growing influence of a weak la niña phase.