Dandong's winters are harsh and cold, with temperatures often dropping below -20°C in January and February. By March, the city starts to warm up, with temperatures rising to around 10-18°C, marking the beginning of a gentle spring. As April arrives, temperatures stabilize around 0-24°C, bringing mild days and cooler nights. Summer is hot and humid, with July being the warmest month, averaging highs above 30°C. Autumn cools down quickly, with temperatures dipping below freezing by November, signaling the return of winter chill.