In a warmer climate, extreme day-to-day temperature changes weaken in extratropical regions but intensify in the tropics during December-February. Whereas, during June–August, they show widespread intensification across most regions. Such changes are driven not only by variations in advection but also by adiabatic and diabatic processes. Together, these findings underscore the need for region-specific adaptation strategies to mitigate the risks associated with rapid temperature fluctuations.