Mexico generally has a warm and temperate climate, and most of the country does not experience snowfall. However, some high-altitude regions in the northern and mountainous areas of Mexico, such as the Sierra Nevada and some parts of the northern state of Chihuahua, may see occasional snow.
In places where snow can occur, the number of snow days is typically very low—often just a few days per year. Overall, due to Mexico's diverse geography, the average number of annual snow days is not well-defined and varies significantly by region. If you are interested in a specific area or region within Mexico, I could provide more detailed information based on that.