Calpulalpan, Mexico experiences mild winters and hot summers. The winter months of January, February, and December are characterized by average temperatures in the mid-teens Celsius, with occasional cold snaps bringing temperatures down to around 2°C. As spring approaches in March and April, temperatures gradually rise, reaching averages above 19°C. Summer months from May to August bring relatively stable temperatures, ranging from 18-20°C, while autumn sees a return to milder conditions, with October often being the warmest month of the year.