Overview

• The National Meteorological Service says the season runs from mid-September to May 2026, with an official start on September 15.
• Between 51 and 56 frontal systems are expected nationwide, with the most active period typically from November through February.
• Recent SMN updates caution that an early front is possible in late August, likely affecting border states first.
• Northern states such as Chihuahua, Coahuila, Nuevo León, Sonora and Durango face the sharpest cold with frequent frosts, while the Altiplano expects abrupt temperature drops and strong winds and central highlands may see intense cold and occasional mountain snow.
• CENAPRED and Civil Protection urge precautions including warm clothing, avoiding indoor charcoal braziers, preparing emergency kits and following official SMN, Conagua and local advisories.