Winter Hurricane 2025. Meteorological winter starts sunday the first of december. After a year of record warm global temperatures caused by climate change and an el niño weather pattern, “a weak la niña” is expected to form ahead of the arrival of winter,.

The nws says there’s a 65% chance it will arrive between july. Looking at the forecast for the winter, we anticipate a la niña through the winter—and sure enough, a weak la niña is already starting to develop.